1）I ____________________communicate with her. (我发现和她交流很困难）

2）I feel ____________________. （编一个短剧很有趣）

Summary: ____________________________________________________________

3. Why they suddenly disappeared still remains a mystery.

remain: linking verb

Train fares are likely to remain unchanged.

It remains true that sport is about competing well, not winning.

He will remain (as) manager of the club until the end of his contract.

(vi.) Very little of the house remained after the fire.

It remains to be seen (= it will only be known later) whether you are right.

活用：翻译词组：

1) remain silent_______ 2) remain standing _______ 3) remain seated_______

　　4) remain motionless_______ 5) the remaining ten dollars _______

Summary: ____________________________________________________________

4. So whether life will continue on the earth for millions of years to come depends on whether this problem can be solved .

句中第一个whether 引导_______ 第二个whether 引导_______ , 他们都不能换成if

She was not sure about _______ she should accept his offer.

I don't know _______ or not he will come.

We can't decide _______ to stay in the small cottage .

The problem is _______ they will fight for AIDS .

活用：完成句子： 工程是否继续取决于他们能否筹集到足够的钱。

Whether the project will continue ____________________

Summary: ____________________________________________________________

III. 随堂自测

I. 汉译英(单词和词组）

1.天文学 2. 猛烈的 3. 乘；增加 4. 迷，难题 5. 温和的，文雅的 6. 减少，减轻 7. 灭绝的， 绝种的 8. 物理学家 9. 生物学 10. 因此；于是 11. 太阳系 12. 根据 13. 一团灰尘 14. 对......至关重要的 15. 对......有害的 16.阻止 17. 因为 18. 依靠；取决于 19. 一个人们普遍接受的理论 20. 溶解有害的气体