2016-2017学年 人教版 必修三 Unit 4 Astronomy :the science of the stars language points课件 (5)
2016-2017学年 人教版 必修三  Unit 4 Astronomy :the science of the stars  language points课件 (5)第5页

2. The earth became so violent that it was not clear whether the shape would last or not. violent: a. 暴力的,激烈的 violently adv. a. She was in violent temper.  她暴跳如雷。

主语从句,it为形式主语,whether引到真正 的主语。(注:有or not时,只能用whether 不用if)

[仿写] 比赛是否被推迟目前还不清楚。 the competition would be put off.

It was not clear whether