Read the Learn this! box. Make up two more sentences about your photo in exercise 3 beginning with must have, might have or can’t have. (Đọc phần Learn this! Viết thêm hai câu để miêu tả hai bức ảnh trong bài 3 bắt đầu bằng must have, might have hoặc can’t have.)

LEARN THIS! might / must / can’t have

We use might have + past participle to speculate about past events. We use must have / can’t have + past participle to make deductions about past events and say what is or is not possible.

They might have been good friends once - I don’t know.

I haven’t got my phone. I must have left it at home.

She can’t have gone home. Her coat is still on the chair.