1. Robert writes... (present simple)
2. Robert wrote... (past simple)
3. Robert will write... (future simple)
1. Robert is writing... (present continuous)
2. Robert was writing...(past continuous)
3. Robert will be writing...(future continuous)
1. Robert has written... (present perfect)
2. Robert had written...(past perfect)
3. Robert will have written...(future perfect)
1. Robert has been writing... (present perfect continuous)
2. Robert had been writing...(past perfect continuous)
3. Robert will have been writing...(future perfect continuous)
If I am not busy, I will visit you.
I would have helped you if you had given me more information.
If he were careful, he wouldn’t break things.
If she becomes the Prime Minister, she will raise taxes.
If he were slimmer, he would look more handsome.
If the fire had started, the alarm would have gone off.
If you do not stop wasting time, I will continue without you.
You can make your own food if you do not to like mine.
We would have gone for a stroll if the weather had improved yesterday.
If you took more exercises, you would feel better.
