初中英语情态动词讲解_练习及答案

情态动词

一、 考点、热点回顾

【词汇辨析】

1. sometimes/ some times/sometime/ some time:

sometimes: “有时”=at times. He is sometimes late for school.

some times: “几次” I have been to Nanjing some times.

sometime: “某一时刻” I bought it sometime last spring.

We’ll meet again sometime next week.

some time: “一段时间” We have to stay here for some time.

2. many/ much/ a few/ a little/ few/ little

(1)many修饰可数名词，much修饰不可数名词；都表示许多。例如：

许多书 许多牛奶 (2)a few和a little都表示"有一点儿"，侧重于肯定，相当于"some"，但a few修饰可数名词，

a little修饰不可数名词，例如：

He has a few friends in London.

---Would you like some coffee?

---Yes, just a little.

(3)few和little表示"几乎没有"，侧重否定。few后接可数名词，little后接不可数名词。例如：

He is a strange man. He has few words.

Hurry up, there is little time left.

【固定搭配】加-ing

be busy doing sth. 忙于做 eg: Mother is busy cooking.

look forward to + doing sth. 期待做 eg: Tom looks forward to seeing his father again.

Thank you for (doing) sth. 为了 感谢你 eg: Thank you for your help.

愉快地做某事 eg: I had great fun playing in the water.

=have a good time doing sth eg: I had a good time playing in the water.

做某事有困难

eg: I have difficulty finishing my homework in 2 hours.

【情态动词】 又叫情态助动词。它们具有以下特点：

⑴ 它们必须与其他动词连用，即：情态动词＋动词原形

表示说话人对所述动作的看法，如需要、可能、意愿或怀疑等。

⑵ 绝大多数情态动词没有人称和数的变化，即第三人称单数不加-s

（以be和have 开头的情态动词短语除外）。

⑶ 在意义上，情态动词具有“多义性”。

例：can既可表示能力，又可表示可能、允许等意义。

【情态动词的基本用法】

1. can的基本用法：

⑴ 表示体力或智力上的能力，即“能够，会”，可与be able to转换。

例：He can speak English. = He is able to speak English.

—Can you play basketball?

— No, I can’t.

如果表示将来具备的能力，要用will be able to。

例：If I have a good sleep, I will be able to do the problem.