She is a teacher, not she is teacher; Money can't buy happiness, not the money can't buy the happiness.
What you'll learn
Article mistakes tend to go one of two ways: leaving out 'a/an' where English needs it, or adding 'the' where English doesn't want it at all. This lesson is a quick reference for the specific situations where each mistake shows up most often.
A singular countable noun — including a job title after 'be' — needs an article. English never lets it stand completely bare.
When you're talking about something in general — not one specific example of it — uncountable and plural nouns take no article at all.
Country, city, and continent names are usually used with no article at all. A small group of plural-form or descriptive country names is the exception and does take 'the'.
When you single out the one example at the top of a scale — the best, the most, the tallest — that specificity almost always calls for 'the'.
A job title after 'be' needs 'a/an' — it can't stand alone.
A general statement about an uncountable noun takes no article at all.
Most country names take no article — 'the Ukraine' is an outdated, no-longer-used form.
Superlatives (best, most, tallest) almost always need 'the'.
"What do you want to be when you finish studying?"
"I want to be a doctor — it's the most meaningful job I can imagine."
"That's a big commitment. Where would you like to work?"
"Honestly, anywhere — I just want to help people. Money isn't the main reason."
Exercise 1 · Choose the correct sentence
Which is correct?
Exercise 2 · Choose the correct sentence
Which is correct?
Exercise 3 · Choose the correct sentence
Which is correct?
Exercise 4 · Choose the correct sentence
Which is correct?
Exercise 5 · Choose the correct sentence
Which is correct?
Exercise 6 · Choose the correct sentence
Which is correct?
Exercise 7 · Choose the correct sentence
Which is correct?
Exercise 8 · Choose the correct sentence
Which is correct?
Exercise 9 · Correct the mistake
Correct the mistake: I want to be doctor when I grow up.
Exercise 10 · Correct the mistake
Correct the mistake: The life is difficult sometimes.
Five quick questions to check what stuck.
Question 1 / 5
Score: 0/0
Which is correct?
Common Preposition Mistakes
A focused review of the prepositions most often paired with the wrong verb or adjective — married to (not with), depend on (not of), listen to (not nothing at all).
Gerund vs Infinitive Mistakes
A focused review of the verbs most often paired with the wrong pattern — enjoy + -ing (not to), want + to (not -ing), and the 'to' + -ing trap in phrases like look forward to.
Pronoun Mistakes
A focused review of the most common pronoun mistakes — the wrong pronoun after 'and' or a preposition, and reflexive pronouns added where English doesn't need one.
Subject–Verb Agreement Mistakes
A focused review of the trickiest subject–verb agreement errors — agreeing with the wrong noun when a phrase comes between the subject and the verb, and singular indefinite pronouns that feel plural.