现在完成时表示从过去某一时刻开始一直延续到现在的动作或状态，或还要延续下去，句中常用：since, for, yet, already表示的一段时间状语连用。

例如：

1)　 Great changes have taken place in China since 1980.

2)　 I have finished my task.

进行时表示现在时刻正在进行的动作或表示现阶段正在做的事情，句中常用now, at this moment等时间状语连用。

例如：

1)　 The boy is playing video games.

2)　 His father is writing a novel these days.

英语动词表示将来时间有多种形式，其共同特点是句中常有表示见来时间的状语，如：tomorrow, next week, in a week

例如：

1)　 We will visit the science museum next week.

2)　 We are going to discuss the problem tomorrow.

一般过去时主要用于表示过去时间，句中常有yesterday, ago, in 1989, once, last week (month, year), at that time, just now 等时间状语。

例如：

1)　 he was born in 1989.

2)　 I used to play football when I was young.

一般现在时表示经常发生的动作(习惯性的动作)或存在的状态，句中常用always, usually, often, sometimes, seldom, never, every day等时间状语。

例如：

1)　 He goes to school at seven o’clock everyday.

2)　 The sun rises in the east.

10. At the age of ______________ (四岁), she began to learn French, and he began to learn Russian in her ______________ (四十多岁).

9.　 -Where do you live?

-___________ ___________ __________ __________ (1202房间) the _________ (十二) floor.

8.　 He has spent _________ ________ ____ (半天) in writing a ___________ (两千个字的) article.

7.　 We have built a new library. It is _________ __________ __________ ____________ (大两倍) the old one.

6.　 On the fine nights we can see ___________ __________ (成百万个) stars in the sky.