in time_______ on time _______ kill the time_______ ahead of time _______

all the time _______ in no time _______take one's time_______

句式 It is time that sb. did sth. 或者 It is time that sb. /should do sth. (注：should不可省略)

　活用：【即学即练】

　1）Experts have been warning ____ of the health risks caused by passive smoking.

A. at a time B. at one time C. for some time D. for the time

2) We were good friends _____________, but aren't now.

3) Will I be ____________ for the six o'clock train?

2. in one's turn in one's turn to do sth．轮到某人做某事

【拓展】in turn / by turns／take turns区别

in turn 1) one after the other in a particular order

The children called out their names in turn.

2) as a result of sth in a series of events

Increased production will, in turn, lead to increased profits.

take turns (in sth/to do sth) ( BrE also take it in turns )

The male and female birds take turns in sitting on the eggs.

We take it in turns to do the housework.

The kids took turns on the swing.

by turns 1)Mary and Jane rode by turns.

2) He grew pale and red by turns.

活用：翻译：1) 我们轮流打扫教室。____________________________________________

2) 在食堂我们按次序打饭。____________________________________________

summary: ____________________________________________________________

随堂自测

I. 汉译英（单词和词组）

1. 宗教 2. 学说；理论 3.大气层；气氛 4. 基本的；基础的 5. 万有引力；重力

6. 卫星 7.气候 8. 碰撞；坠落 9. 宇宙飞船 10. 漂浮 11. 下蛋 12.产生，分娩

13. 挡住（光线） 14. 既然15. 爆发16. 密切关注；当心 17. 向四面八方

18.感到高兴 19. 熟悉；掌握； 20. 连锁反应