初中英语助动词思维导图

She is doing her homework now.

I asked him what he had been doing all afternoon.

The baby was put in bed by his mother.

The invitation was received yesterday.

These books are not to be taken out of the room.

She is to arrive at six this morning.

I have not seen him for three years.

How long has your uncle taught in the village?

He had lived in Scotland for fifteen years before he came to England.

She had to go shopping yesterday.

Did anyone sharpen this knife?

I don’t think you are right.

I do want to have a talk with you

Do come and see me.

Have you finished your work? Yes, I did yesterday.

He plays basketball well. So does his brother.

They will move to a new house.

She will not eat any solid food.

must是情态动词，意思是“必须”、“应该”、“一定要”，后接动词原形。Must的否定形式为mustn’t.构成疑问句时，肯定回答一般用must。否定回答用needn’t或don’t have to 表示“不必”。

如：

have to 表示“不得不，必须”，可用于多种时态。

I used to go to work by bus. Now I go by car.

I used to collect stamps when I was a boy.

Used they to have a lot more free time ?