Comprehensive Guide to English Grammar and Usage

Formation and Use of Adverbs

• Adverbs are generally formed by adding $-ly$ to an adjective (e.g., $glad \rightarrow gladly$).
• Exceptions to the $-ly$ suffix rule include:     - Multi-syllabic adjectives ending in $-y$: The $-y$ changes to $-i$ before adding $-ly$ (e.g., $easy \rightarrow easily$, $funny \rightarrow funnily$).     - Mute $-e$ at the end of a word: The $-e$ is dropped for adjectives like $due$, $true$ ($\rightarrow truly$), and $whole$.     - Adjectives ending in a consonant + $-le$: The ending changes to $-ly$ (e.g., $simple \rightarrow simply$, $probable \rightarrow probably$).     - Adjectives ending in $-ic$: The ending changes to $-ically$ (e.g., $fantastic \rightarrow fantastically$). A notable exception is $public$, which becomes $publicly$.
• Irregular formation: Adjective $good$ becomes the adverb $well$.
• Adjectives already ending in $-ly$: If an adjective ends in $-ly$, like $friendly$, an adverb is not formed by adding more suffixes; instead, the construction $in\,a + Adjective + manner/way$ is used (e.g., $in\,a\,friendly\,manner$).
• Identity of Form: Some words have the same form as both an adjective and an adverb, including $daily$, $early$, $fast$, $hard$, $long$, $low$, $weekly$, and $yearly$.     - Practical Example 1: "The task is hard." (Adjective).     - Practical Example 2: "She works hard." (Adverb).
• Differentiating Meanings ($Adjective/Adverb$ vs. $-ly$ Adverb):     - $hard$ (difficult, hard) vs. $hardly$ (scarcely, almost not).     - $late$ (late) vs. $lately$ (recently, lately).     - $near$ (near, close) vs. $nearly$ (almost).

Usage of Adverbs

• Adverbs are used to provide more detail for verbs, adjectives, other adverbs, or entire sentences:     - Modifying a Verb: "She easily found her brother in the crowd."     - Modifying an Adjective: "This band is extremely famous."     - Modifying another Adverb: "He walks extremely quickly."     - Modifying a Whole Sentence: "Fortunately, nobody was hurt."
• Use of Adjectives instead of Adverbs after State Verbs:     - Adjectives, not adverbs, follow verbs that express a state: $to\,be$, $to\,seem$, $to\,stay$ (e.g., "Everything seems quiet.").     - Verbs of perception ($to\,feel$, $to\,look$, $to\,smell$, $to\,taste$) can be followed by either an adjective or an adverb depending on meaning:         - Adjective: Describes a property of the subject (e.g., "Harry looks happy.").         - Adverb: Describes an activity (e.g., "Harry looks happily at his cake.").

Comparison of Adjectives

• English adjectives have three levels of comparison: Ground form (Positive), $1^{st}$ Comparison ($Comparative$), and $2^{nd}$ Comparison ($Superlative$).
• Comparison with $-er$ and $-est$:     - Applies to monosyllabic adjectives (e.g., $old$, $older$, $oldest$).     - Applies to bisyllabic adjectives ending in $-er$, $-le$, $-ow$, or $-y$.         - $clever$, $cleverer$, $cleverest$         - $simple$, $simpler$, $simplest$         - $narrow$, $narrower$, $narrowest$         - $funny$, $funnier$, $funniest$
• Spelling Rules for Suffixes:     - Mute $-e$ drops: $simple \rightarrow simpler$, $simplest$.     - $-y$ changes to $-i-$ after a consonant: $funny \rightarrow funnier$, $funniest$.     - Final consonant doubles after a stressed vowel: $fit \rightarrow fitter$, $fittest$.
• Comparison with $more\dots$ and $most\dots$:     - Applies to bisyllabic adjectives that do not end in $-er$, $-le$, $-ow$, or $-y$.     - Applies to adjectives with $3$ or more syllables.     - Example: $useful$, $more\,useful$, $most\,useful$.     - Example: $difficult$, $more\,difficult$, $most\,difficult$.

Using Comparisons in Sentences

• Positive (Equality/Inequality): Use $(not)\dots as + adjective + as$ (e.g., "Anne is as tall as John," "John is not as tall as Steve").
• Comparative: Use $comparative\,form + than$ (e.g., "Steve is taller than Anne").
• Superlative: Use $the + superlative\,form$ to highlight one person/thing (e.g., "Steve is one of the tallest boys in class").

Comparison of Adverbs

• Adverbs ending in $-ly$ use $more\,and\,most$ (or $less\,and\,least$) for comparison (e.g., "Steve talks more quickly than John").
• Adverbs sharing the same form as adjectives use $-er\,and\,est$ prefixes:     - $fast \rightarrow faster \rightarrow fastest$     - $early \rightarrow earlier \rightarrow earliest$
• Irregular Comparisons (must be memorized):     - $good/well \rightarrow better \rightarrow best$     - $bad/badly \rightarrow worse \rightarrow worst$     - $little \rightarrow less \rightarrow least$     - $much/many \rightarrow more \rightarrow most$

Position of Adverbials in Sentences

• Adverbials can occupy three primary positions:     - Front position (before the subject): "Tomorrow he will be in London." Often used for emphasis.     - Mid position:         - Before the main verb: "She often goes to school by bike."         - After $to\,be$: "She is already at home."         - After the first auxiliary verb: "You can even go swimming there."     - End position: "He will be in London tomorrow."
• Order at sentence end: If multiple adverbials are present, the sequence is Manner – Place – Time (e.g., "The snow melts slowly in the mountains at springtime.").

The Use of Articles

• Definite Article ($the$): Used when referring to specific people or things (e.g., "The cat is sleeping on the sofa").     - Always used with:         - Abstract concepts followed by an explanation (e.g., "The agriculture practised in the USA…").         - Specific building references (structure): "The school should be renovated soon."         - Plural proper names (family names, mountain ranges, islands, certain countries): $the\,Johnsons$, $the\,Rockies$, $the\,Hebrides$, $the\,Netherlands$, $the\,USA$.         - Rivers and oceans: $the\,Mississippi$, $the\,North\,Sea$, $the\,Pacific\,Ocean$.
• Indefinite Article ($a/an$): Used for non-specific entities (e.g., "A man is walking down the road").     - Frequently used for:         - Professions: $an\,engineer$.         - Nationalities: $a\,Scot(sman)$.         - Religion or political party membership: $a\,Catholic$.
• No Article (Zero Article): Required for:     - Uncountable materials: "Gold is very valuable."     - Abstract nouns without specific modifiers: "Buddhism is widespread in Asia."     - Phrases denoting humanity or society as a whole: "Man is responsible for global warming."     - Institutions as a concept: $school$, $church$, $university$, $prison$ (e.g., "School starts at $9\,a.m.$ ").     - Meals: $breakfast$, $lunch$, $dinner$.     - Transportation with $by$: $by\,bike$.     - Personal names/titles used as names: $Tom$, $Mr\,Scott$, $Queen\,Elizabeth$, $Dr\,Hill$, $Dad$, $Uncle\,Harry$.     - Specific urban features: $Fifth\,Avenue$, $Trafalgar\,Square$, $Westminster\,Bridge$, $Hyde\,Park$.     - Locations: Countries ($France$), continents ($Asia$), cities ($San\,Francisco$), lakes ($Loch\,Ness$), islands ($Corsica$), mountains ($Ben\,Nevis$).

Pronouns and Determiners

• Possessive Determiners (with noun) vs. Possessive Pronouns (replacing noun):     - $my / mine$     - $your / yours$     - $his / his$     - $her / hers$     - $its / --$     - $our / ours$     - $your / yours$     - $their / theirs$
• Reflexive Pronouns: Refer back to the subject ($myself$, $yourself$, $himself/herself/itself$, $ourselves$, $yourselves$, $themselves$).     - Verbs that do not use reflexives in English: $apologise$, $hide$.     - Differences in meaning:         - $to\,enjoy + object$: To enjoy a specific thing (e.g., "He is enjoying the party.").         - $to\,enjoy + reflexive$: To have fun (e.g., "She is enjoying herself.").         - $to\,help + object$: To assist (e.g., "He is helping the child.").         - $to\,help + reflexive$: To serve oneself (e.g., "Help yourself!").
• Reciprocal Pronoun: $each\,other / one\,another$ is used for mutual relationships between people.     - Contrast with reflexive: "talks to himself" (reflexive) vs. "talked to each other" (reciprocal).     - Verbs that do not require $each\,other$: $to\,meet$, $to\,kiss$.

Modal Auxiliaries

• Auxiliaries include $to\,be$, $to\,have$, and $to\,do$ (when used with full verbs), plus specific modals like $can$, $may$, and $must$.
• Formation Features: Modals have only one form for all people; there is no $3^{rd}$ person singular $-s$.
• Substitute Forms (Ersatzformen) are needed because modals cannot form all tenses:     - $can$ (ability/permission): $(to)\,be\,able\,to$ or $(to)\,be\,allowed\,to$. In past tense/conditional, $could$ is also possible.     - $may$ (permission, very polite): $(to)\,be\,allowed\,to$.     - $must$ (obligation): $(to)\,have\,to$.
• Categorical Distinction (mustn't vs needn't):     - Prohibition: $must\,not / mustn't$ (meaning "not allowed to").     - No obligation: $not\,have\,to$ or $needn't$ (meaning "not necessary").

Major Verb Tenses and Forms

• Simple Present: For habitual tasks and general truths. Uses infinitive except in $3^{rd}$ person singular ($+s$). Spelling exceptions for $-s$: $-es$ after sibilants, $-y \rightarrow -ies$. Uses $do/does$ for questions/negations (unless it's the subject).
• Present Progressive: For actions happening now and incomplete ($am/is/are + present\,participle$). Signal words: $now$, $at\,the\,moment$.
• Simple Past: Completed past actions ($+ed$ or irregular). Questions use $did$. Signal words: $yesterday$, $last\,week$, $two\,years\,ago$, $in\,2012$.
• Past Progressive: For ongoing past actions or actions interrupted by another ($was/were + present\,participle$).
• Present Perfect (Simple): Actions continuing from past to now or past actions with present results ($have/has + past\,participle$).     - $since$ denotes a point in time; $for$ denotes a duration.
• Present Perfect Progressive: Emphasizes the duration of the action from the past into the present ($have/has\,been + present\,participle$).
• Past Perfect (Simple): Sequences of events where one past action occurred before another past action ($had + past\,participle$).
• Past Perfect Progressive: Emphasizes the duration of an action in the past until another action started ($had\,been + present\,participle$).
• Will-future: Predictions, assumptions, and spontaneous decisions ($will + infinitive$).
• Going-to-future: Plans, intentions, and events about to happen due to clear signs ($am/is/are + going\,to + infinitive$).
• Future Progressive: Actions that will be ongoing at a specific time in the future ($will\,be + present\,participle$).
• Future Perfect: Actions that will be finished at a specific point in the future ($will\,have + past\,participle$). Signal: $by$.

Passive Voice

• Formation: $form\,of\,to\,be + past\,participle$.
• Transformation Rules:     - Object of active sentence becomes Subject of passive sentence.     - Subject of active sentence can become the by-agent (introduced by $by$).
• Double Objects: If an active sentence has two objects (direct and indirect), two passive forms are possible. When an indirect object is used as the object in passive (not the subject), it is introduced with $to$ (e.g., "A ball was given to her").
• Active Retrieval: If the by-agent is missing in the passive sentence, the active subject must be supplemented (e.g., $somebody$, $we$, $they$).

Infinite Verb Forms

• Infinitive (with $to$): Used after specific verbs ($decide$, $expect$, $manage$), nouns ($idea$, $wish$), adjectives ($difficult$, $easy$), and question words (e.g., "We knew where to find her").
• Object + Infinitive: Construction where English uses an object and an infinitive where other languages might use a "that" clause. Used after verbs like $allow$, $help$, $rely\,on$, and certain adjectives modified by $too$ or $enough$ (e.g., "too heavy for me to carry").
• Gerund ($-ing$ form): Used as a noun (subject or object). Required after certain verbs ($enjoy$, $give\,up$, $keep$) and after specific prepositional phrases ($interested\,in$, $reason\,for$, $look\,forward\,to$).
• Prepositions and Gerunds: The gerund always follows prepositions like $after$, $before$, $by$, and $instead\,of$ when they introduce an action.
• Infinitive vs. Gerund (Meaning Change):     - $remember/forget + inf$: Future intention vs. $+ gerund$: Past memory.     - $stop + inf$: Pausing to do something vs. $+ gerund$: Quitting an activity.

Participles

• Present Participle ($-ing$): Used for progressive tenses and as adjectives (e.g., "running water").
• Past Participle ($-ed / irregular$): Used for perfect tenses, the passive, and as adjectives (e.g., "well-paid job").
• Clause Shortening with Participles:     - Present participle denotes simultaneity: "He did his homework listening to music."     - $Having + past\,participle$ denotes a sequence (one before another): "Having done his homework, he listened to music."     - Past participle can shorten passive relative clauses.     - Clauses can be shortened if both the main and subordinate clauses share the same subject.

Sentence Structure and Clauses

• Default Order: Subject – Predicate – Object (S-P-O).
• Conditional Type I (Real/Fulfilling): $if-clause (simple\,present) \rightarrow main\,clause (will-future)$. Modals or imperatives are also allowed in the main clause.
• Conditional Type II (Hypothetical): $if-clause (simple\,past) \rightarrow main\,clause (would + infinitive)$.
• Conditional Type III (Unreal Past): $if-clause (past\,perfect) \rightarrow main\,clause (would\,have + past\,participle)$.
• Relative Clauses:     - $who/whose$ for people.     - $which$ for things.     - $that$ for people and things (essential/defining info only).     - Defining relative clauses (no commas, $that$ allowed, potential contact clause if object) vs. Non-defining relative clauses (commas, extra info, $that$ NOT allowed).

Reported Speech

• Pronouns and determiners shift based on the speaker's perspective ($I \rightarrow he/she$, $my \rightarrow his/her$, $this \rightarrow that$).
• Backshift of Tenses (required if intro verb is in the past):     - Simple present $\rightarrow$ simple past     - Simple past / present perfect $\rightarrow$ past perfect     - Will-future $\rightarrow$ conditional I ($would$)
• Shift of Adverbials of Time and Place:     - $now \rightarrow then$     - $today \rightarrow that\,day$     - $tomorrow \rightarrow the\,following\,day$     - $yesterday \rightarrow the\,day\,before$     - $here \rightarrow there$
• Questions in Reported Speech: Change to statement word order (no $do/does/did$). Use $if / whether$ if there is no question word.
• Commands: Use $tell/order + object + (not)\dots to + infinitive$.

Irregular Verbs List (Selection)

• $be \rightarrow was/were \rightarrow been$ (sein)
• $begin \rightarrow began \rightarrow begun$ (beginnen)
• $blow \rightarrow blew \rightarrow blown$ (wehen)
• $break \rightarrow broke \rightarrow broken$ (brechen)
• $bring \rightarrow brought \rightarrow brought$ (bringen)
• $build \rightarrow built \rightarrow built$ (bauen)
• $buy \rightarrow bought \rightarrow bought$ (kaufen)
• $catch \rightarrow caught \rightarrow caught$ (fangen)
• $choose \rightarrow chose \rightarrow chosen$ (w$\ddot{a}$hlen)
• $come \rightarrow came \rightarrow come$ (kommen)
• $cut \rightarrow cut \rightarrow cut$ (schneiden)
• $do \rightarrow did \rightarrow done$ (tun)
• $draw \rightarrow drew \rightarrow drawn$ (zeichnen)
• $drink \rightarrow drank \rightarrow drunk$ (trinken)
• $drive \rightarrow drove \rightarrow driven$ (fahren)
• $eat \rightarrow ate \rightarrow eaten$ (essen)
• $fall \rightarrow fell \rightarrow fallen$ (fallen)
• $feed \rightarrow fed \rightarrow fed$ (f$\ddot{u}$ttern)
• $feel \rightarrow felt \rightarrow felt$ (f$\ddot{u}$hlen)
• $find \rightarrow found \rightarrow found$ (finden)
• $fly \rightarrow flew \rightarrow flown$ (fliegen)
• $get \rightarrow got \rightarrow got$ (bekommen)
• $give \rightarrow gave \rightarrow given$ (geben)
• $go \rightarrow went \rightarrow gone$ (gehen)
• $grow \rightarrow grew \rightarrow grown$ (wachsen)
• $hang \rightarrow hung \rightarrow hung$ (h$\ddot{a}$ngen)
• $have \rightarrow had \rightarrow had$ (haben)
• $hear \rightarrow heard \rightarrow heard$ (h$\ddot{o}$ren)
• $hit \rightarrow hit \rightarrow hit$ (schlagen)
• $hold \rightarrow held \rightarrow held$ (halten)
• $keep \rightarrow kept \rightarrow kept$ (halten)
• $know \rightarrow knew \rightarrow known$ (wissen)
• $lay \rightarrow laid \rightarrow laid$ (legen)
• $leave \rightarrow left \rightarrow left$ (verlassen)
• $let \rightarrow let \rightarrow let$ (lassen)
• $lie \rightarrow lay \rightarrow lain$ (liegen)
• $lose \rightarrow lost \rightarrow lost$ (verlieren)
• $make \rightarrow made \rightarrow made$ (machen)
• $meet \rightarrow met \rightarrow met$ (treffen)
• $pay \rightarrow paid \rightarrow paid$ (bezahlen)
• $put \rightarrow put \rightarrow put$ (stellen/setzen)
• $read \rightarrow read \rightarrow read$ (lesen)
• $ring \rightarrow rang \rightarrow rung$ (l$\ddot{a}$uten)
• $run \rightarrow ran \rightarrow run$ (rennen)
• $say \rightarrow said \rightarrow said$ (sagen)
• $see \rightarrow saw \rightarrow seen$ (sehen)
• $send \rightarrow sent \rightarrow sent$ (schicken)
• $show \rightarrow showed \rightarrow shown$ (zeigen)
• $sing \rightarrow sang \rightarrow sung$ (singen)
• $sit \rightarrow sat \rightarrow sat$ (sitzen)
• $sleep \rightarrow slept \rightarrow slept$ (schlafen)
• $smell \rightarrow smelled/smelt \rightarrow smelled/smelt$ (riechen)
• $speak \rightarrow spoke \rightarrow spoken$ (sprechen)
• $spend \rightarrow spent \rightarrow spent$ (ausgeben/verbringen)
• $stand \rightarrow stood \rightarrow stood$ (stehen)
• $steal \rightarrow stole \rightarrow stolen$ (stehlen)
• $swim \rightarrow swam \rightarrow swum$ (schwimmen)
• $take \rightarrow took \rightarrow taken$ (nehmen)
• $teach \rightarrow taught \rightarrow taught$ (lehren)
• $tell \rightarrow told \rightarrow told$ (erz$\ddot{a}$hlen)
• $think \rightarrow thought \rightarrow thought$ (denken)
• $throw \rightarrow threw \rightarrow thrown$ (werfen)
• $wake \rightarrow woke \rightarrow woken$ (aufwachen)
• $wear \rightarrow wore \rightarrow worn$ (tragen)
• $win \rightarrow won \rightarrow won$ (gewinnen)
• $write \rightarrow wrote \rightarrow written$ (schreiben)