Countable nouns are things you can count: one book, two books, a teacher, several ideas. A singular countable noun almost always needs a word before it, such as a, an, the, my or this. Missing articles are one of the most visible grammar slips in written work.
This lesson follows choosing tense to express a time relationship in grammar for clear meaning.
How do you decide which article to use?
Ask three questions in this order.
- Is the noun singular and countable? If yes, it needs some kind of determiner. “I saw dog” is incomplete.
- Does the reader know which one I mean? If yes, use the. If no, use a or an.
- Is the noun plural or uncountable, and used in general? If yes, use no article: “Dogs bark.” “Advice helps.”
The choice between a and an follows the sound of the next word: a before a consonant sound (a book, a university), an before a vowel sound (an apple, an hour).
Worked example
Add the missing articles: Yesterday I found wallet near library. Wallet belonged to student from my school.
Step 1, look at each noun. Wallet, library and student are singular countable nouns, so each needs a determiner.
Step 2, first mention or known? “Wallet” is new in sentence one, so: a wallet. “Library” is a place both of us probably know in context, so: the library. In sentence two, “wallet” was already mentioned: the wallet.
Step 3, describe the student. One of many students, not yet identified: a student. “School” after “my” already has a determiner, so nothing is added.
Step 4, rewrite. Yesterday I found a wallet near the library. The wallet belonged to a student from my school.
Step 5, check. Each noun is now introduced with a and then referred to with the. The reader can follow which wallet is meant.
The mistake to watch for
Learners often use the for every noun, or drop articles on singular nouns.
Mistaken sentence: The teachers are important for the success.
This mixes a general statement with an unnecessary the.
Correction: Teachers are important for success. Both nouns are general (plural and uncountable), so they take no article. If you mean one particular group, you would say, The teachers at my school are important for our success.
Another slip is using a plural with a: an advices is wrong, because advice is uncountable, and a homeworks is wrong for the same reason.
Check yourself
Try these, then open each answer.
1. Fill the gaps with a, an, the or nothing (write ”–”): She is ___ engineer. ___ engineer works at ___ hospital in Ipoh.
Show answer
She is an engineer. The engineer works at a hospital in Ipoh. The first mention is a or an, the second mention is the. The hospital is new information, so a.
2. Correct: I need an information about the universities.
Show answer
I need information about universities. Information is uncountable, so it takes no a or an. If you mean specific universities, the universities can stay.
3. Which is correct: a honest answer or an honest answer?
Show answer
an honest answer. Honest starts with a vowel sound because the h is silent.
Where this leads next
Next, look at repairing subject-verb agreement, where long noun phrases can hide the real subject. Use the mixed grammar practice set to test articles alongside the other skills.
Malay and Chinese have no articles, so many students find a, an and the the slowest habit to settle. A teacher can point out the pattern in your own drafts in online one-to-one English as a Second Language tuition.