40 concise reference notes for english. These are public reference material, not private user records or a transfer of language-model weights.

English sentence order

A common statement order is subject, verb, then object: “Mara checks the report.” Add place and time where they make the meaning clear. Questions and emphasis can use other orders.

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Subject and verb agreement

In the simple present, he/she/it usually takes an -s verb: “She works here.” I/you/we/they use the base form: “They work here.” Be and have have their own forms.

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Present simple

Use the present simple for routines and general statements: “I check the dashboard every morning.” For a negative, use do not or does not with the base verb: “She does not work here.”

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Present continuous

Use am/is/are plus an -ing form for an activity in progress: “I am checking the report.” It can also describe a temporary situation or an arranged future event. Not every verb naturally takes this form.

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Past simple

Use the past simple for completed events in a finished past period: “We tested it yesterday.” Regular verbs usually take -ed; irregular forms must be learned. After did or did not, use the base verb.

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Present perfect

Use have/has plus a past participle to connect a past event with the present: “I have sent the report.” A finished time such as yesterday normally calls for the past simple instead.

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Past continuous

Use was/were plus an -ing form for an activity in progress at a past time: “We were testing when the power failed.” It provides background; the past simple can identify the interrupting event.

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Future plans

Going to often presents an intention: “I am going to test it.” The present continuous can describe an arrangement: “We are meeting on Tuesday.” Will can express a prediction, offer or immediate decision.

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English negatives

Keep the negative attached to the intended claim. “I do not think it works” and “I think it does not work” can differ in emphasis. Do not remove not, never or no when shortening a sentence.

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Yes-no questions

With be or a modal, place it before the subject: “Are you ready?” “Can you help?” Many simple present and past questions use do, does or did with a base verb: “Did you check?”

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Information questions

Who asks about a person, where about a place, when about time, why about a reason, and how about a manner or process. Ask only for the information needed to continue.

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Indirect questions

Use statement order after an opening such as “Could you tell me”: “Could you tell me where the office is?” Avoid “where is the office” inside that indirect question.

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A and an

Use a or an before a singular count noun when introducing an unspecified item. Choose by sound: “an hour” but “a university.” A consonant or vowel letter alone does not determine the choice.

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The definite article

Use the when the reader can identify the intended referent: “I found a file. The file was empty.” Article choice also depends on names, generalizations and established expressions.

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Count and mass nouns

Count nouns can take numbers: “three tasks.” Mass nouns often use a measure: “three pieces of information.” In ordinary English, information and advice are usually mass nouns.

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Much and many

Many normally goes with plural count nouns: “many requests.” Much goes with mass nouns: “much traffic.” A lot of can work with either and is common in everyday statements.

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Few and little

Few concerns countable items; little concerns mass quantities. A few and a little suggest some. Without a, few or little often emphasizes that the amount is small or insufficient.

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English pronouns

Pronouns should have a clear referent. In “Mara told Ana that she was late,” she is ambiguous. Repeat the relevant name when the distinction matters instead of guessing who was late.

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Possessive forms

For a singular noun, possession often uses apostrophe-s: “the client’s request.” A regular plural ending in s usually takes a final apostrophe: “the clients’ requests.” Its is possessive; it’s means it is or it has.

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English contractions

Contractions shorten combinations such as I am to I’m and we are to we’re. They often suit conversation. Expand a contraction when clarity matters, especially if a negative could be missed.

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Adjectives and adverbs

An adjective can describe a noun: “a careful review.” An adverb can describe an action: “review carefully.” Not all adverbs end in -ly; some words change meaning with that ending.

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English comparisons

Short adjectives often take -er: “faster.” Many longer ones use more: “more reliable.” Avoid doubling the form as in “more faster.” Better and worse are irregular comparisons.

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Time prepositions

Common patterns include at 9, on Monday, and in October. These are useful patterns, not universal rules for every expression. By Friday is a deadline; until Friday describes continuation up to that time.

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Since and for

Since identifies a starting point: “since Monday.” For identifies a duration: “for three days.” Select a tense that matches whether the situation continues or belongs to a finished period.

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English modals

Can, could, may, might, must, should and would express different abilities, possibilities or obligations. A modal normally takes a base verb: “She can help,” not “She can helps.”

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Conditional sentences

A real future condition often uses present after if: “If it passes, we will deploy.” A hypothetical present often uses past form and would: “If we had more time, we would test again.”

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Active and passive voice

“Mara approved the change” names the actor first. “The change was approved” focuses on the change and omits the actor. Choose deliberately; a passive sentence can hide responsibility if the actor matters.

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Run-on sentences

Two complete clauses should not normally be joined by only a comma. Use a full stop, a semicolon, or an appropriate conjunction: “The test failed, so we stopped.” Do not split decimal numbers or abbreviations blindly.

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English punctuation

Use punctuation to make structure clear. A question mark signals a direct question; a colon can introduce an explanation or list. Repeated exclamation marks usually add intensity, not precision.

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Clear requests

Give enough context to identify the task, then state the requested action and any real deadline. Example: “Please review the attached draft by Thursday and mark any incorrect figures.” Avoid inventing urgency.

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Clarification in conversation

Name the unclear part and ask one focused question: “By ready, do you mean reviewed or deployed?” This is easier to answer than asking someone to repeat an entire explanation.

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Acknowledging without agreeing

“I understand your concern” acknowledges a concern. It does not mean “I agree with your conclusion.” Keep those functions separate, especially when evidence is incomplete.

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Polite disagreement

State the point of disagreement and give a reason: “I see the benefit, but the current estimate leaves out testing.” Critique the claim or plan rather than the person.

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Useful apologies

Identify what went wrong, acknowledge its effect and state a concrete repair when one exists. “Sorry for the delay; I will send an update tomorrow” is only appropriate if that commitment is real.

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Professional follow-ups

Refer to the previous topic, ask for the specific update you need and give relevant timing. Avoid implying someone promised a deadline unless they actually did.

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Clear status updates

Separate completed work, current work, blockers and the next checkpoint. Use completed only for verified results. “Testing has started” is different from “Testing passed.”

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Plain English

Use familiar words, concrete actions and manageable sentences. Explain necessary technical terms. Clear language can help expert audiences too; sounding formal is not the same as being precise.

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Changing conversational topics

Signal a topic change briefly: “On another point…” Then state the new subject. If you need to return later, name the unfinished question so it is not lost.

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Giving specific feedback

Describe the observed behavior, its effect and the requested change. Example: “The table lacks units, so I cannot compare the values. Please label each column.” Avoid guessing motives.

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Summarizing accurately

Keep the central claim, necessary conditions and unresolved questions. Preserve numbers, names and negation. Label a summary as incomplete if it omits details that could alter a decision.

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