情态动词 语法讲解

惯”的含义。常与every day, often, frequently等连用。

a. During the vacation, he would visit me every week.

b. When he lived in the country, he would take a walk after supper every day.

6、would表示估计或猜想。

a. It would be about ten when he left home.

b. What would she be doing there? 7、would表示谦恭的请求，常用于疑问句。

a. Would you tell me the way to the

21

station？

b. I would like to have a try.

半情态动词： 一、dare

1、做情态动词时，主要用于疑问句、否定句和条件句，以及含否定或不肯定意义的语境。

a. He daren’t go out alone at night. b. Dare you go out alone at night? c. If the enemy dare come, we will drive them out.

d. He dared not tell his father the result of the exam.

22

2、How dare you /he …? 不是真正意义的疑问句，而是对所做的事表示“愤怒、谴责”之意。

a. How dare you open my drawer without my permission?

b. How dare you say I’m unfair? 3、惯用语I dare say 意思为“我以为；我想”。

a. He is not here yet, but I dare say he will come later. 二、need

1、need作情态动词时，主要用于

23

疑问句和否定句，没有过去时形式。

a. You needn’t come so early.

B --- Need I finish the work today? --- Yes, you must. / No, you needn’t. / No, you don’t have to.

三、used to

1、used to表示过去的习惯动作或状态。（现在已不复如此）。

a. He told us he used to play football when he was young.

2、在疑问句、否定句有两种形式。

24