Present simple
Habits, facts, and how things usually are. To say no or ask, add do or does: I don't buy, he doesn't buy.
- I / you / we / they buy
- he / she / it buys
acheter
Irregular verb.
In speech, the helping verbs shorten: I’m, he’s, we’re, I’ve, I’ll, I’d.
Underlined: the stem is not the infinitive’s.
Enough to talk about now, the past, and your plans, and to give instructions.
Habits, facts, and how things usually are. To say no or ask, add do or does: I don't buy, he doesn't buy.
What is happening now, and plans already arranged: we’re leaving tomorrow.
A finished action at a past time: yesterday, in 2020. To say no or ask, add did: I didn't buy.
Plans and intentions, and what you can see coming: it’s going to rain.
Orders, advice, and instructions. Let’s suggests doing it together. To say no: don't buy.
The past linked to now: experiences, news, and what started earlier and still goes on: I’ve lived here for two years.
An action in progress at a past moment, often interrupted: I was cooking when you called.
Predictions, promises, offers, and decisions made now: I’ll help you.
An activity from the past until now, and how long it has lasted: I’ve been waiting for an hour.
The past before another past moment: when I arrived, the train had left.
An action in progress at a future moment: this time tomorrow, I’ll be flying.
What would happen in an imagined situation, and polite requests: if I had time, I would help.
What would have happened, but did not: if I had known, I would have come.
An activity that had been going on until a past moment: she was tired because she had been running.
An action finished before a future moment: by Friday, I’ll have finished.
How long an activity will have lasted at a future moment: in June, I’ll have been working here for a year.
An action that would be in progress in an imagined situation: if I were rich, I would be traveling now.
An activity that would have been going on in an imagined past: without the rain, we would have been playing outside.