C1 Advanced Emphasis, inversion, cleft sentences
Emphatic do
Lesson goal. After this lesson you can emphasise a verb with do / does / did — a very natural device that learners rarely use.
When to use it
- Contradicting a doubt: He did come — I saw him.
- Strong assertion: I do believe you are right.
- Warm invitation: Do sit down.
- Creating contrast: I don't like coffee, but I do like tea.
Form
| Subject and tense | Auxiliary | Example |
|---|---|---|
| I · you · we · they (present) | do | I do believe you. |
| he · she · it (present) | does | She does work hard. |
| every subject (past) | did | He did come. |
| imperatives | Do | Do sit down. |
Step by step
- Decide whether the sentence is present or past, and note the subject.
- Put do / does / did immediately before the main verb.
- Return the main verb to its base form — the auxiliary now carries the tense.
- When speaking, put the stress on do/does/did itself.
The same rule as other auxiliaries
| Sentence | Main verb | Why |
|---|---|---|
| He did come. | come, not came | did already shows the past |
| She does work hard. | work, not works | does already carries the -s |
| Didn't he come? | come | the same rule |
Examples
I do believe you are right.
He did come to the party — I saw him there.
She does look tired, doesn't she?
Do be careful with that vase!
We did enjoy the concert, despite the rain.
I don't like coffee, but I do like tea.
Common mistakes
He did came yesterday. → He did come yesterday.
The past is marked once — did already does it. Same rule as didn't come.
She does works hard. → She does work hard.
does carries the -s, so the main verb stays bare.
I am do believe you. → I do believe you.
No to be here. The emphatic do stands alone before the verb.
Memory tip
Learners tend to add really or very. But to contradict a doubt, native speakers reach for do / did — stronger and far more natural.
Summary
- do / does / did + base verb for emphasis.
- The auxiliary carries the tense, so the main verb stays bare.
- Used only in positive statements and imperatives.
Practise this lesson
Do exercises with an explanation for every question, take mini tests and track your progress on GrammUp.