1
1. He can speak English./ He could speak speak English two years ago./ He would be able to speak English.
2. They can play football./ They could play football last week./ They would be able to play football.
3. I can help you./ I could help you yesterday./ I shall be able to help you.
4. I can't come to you./ I couldn't came to you thouse Wednesday./ I shouldn't be able to come to you.
5. We can't tell you about it./ We couldn't tell you about it a week ago./ We wouldn't be able to tell you about it.
6. Nick can swim across this river./ Nick could swim across this river last year./ Nick would be able to swim across this river.
2
1. He could read when he was five.
2. Can I speak to Lena, please?
3. We would be able to help you tomorrow.
4. I could answer the lesson well yesterday.
5. Can you tell me the way to thr Space Museum, please?
6. I shall be able to give you the book back next Sunday.