1️⃣ A sentence starts with a capital letter and ends with a period/full stop, question mark, or exclamation mark.

2️⃣ The order of a basic positive sentence is Subject-Verb-Object.

3️⃣ Every sentence must have a subject and a verb. An object is optional. An imperative sentence may have a verb only, with the subject understood.

4️⃣ The subject and verb must agree in number.

5️⃣ When two singular subjects are connected by or, use a singular verb. This also applies to either/or and neither/nor.

6️⃣ Adjectives usually come before nouns, except when a verb separates the adjective from the noun.

7️⃣ When using two or more adjectives together, the usual order is opinion adjective + fact adjective + noun.

8️⃣ Treat collective nouns as singular or plural depending on context and regional usage.

9️⃣ Its and it’s are different words with different meanings.

🔟 Your and you’re are different words with different meanings.

1️⃣1️⃣ There, their, and they’re are three different words with different meanings.

1️⃣2️⃣ The contraction he’s can mean he is or he has. Similarly with she’s, it’s, and John’s.

1️⃣3️⃣ The contraction he’d can mean he had or he would. Similarly with they’d.

1️⃣4️⃣ Spell proper nouns with an initial capital letter.

1️⃣5️⃣ Spell proper adjectives with an initial capital letter.

1️⃣6️⃣ Use a/an for countable nouns in general, and the for specific countable nouns or all uncountable nouns.

1️⃣7️⃣ Use a before words starting with a consonant sound and an before words starting with a vowel sound.

1️⃣8️⃣ Use many or few with countable nouns, and much, a lot, or little with uncountable nouns.

1️⃣9️⃣ To show possession, use apostrophe + s for singular owners and s + apostrophe for plural owners.

2️⃣0️⃣ In general, use the active voice rather than the passive voice.