课文重难点精析 (Unit 3, Book 7)

Well, it’s teamwork — the killers over there are throwing themselves on top of the whale’s blow-hole to stop it breathing. (P.20) 啊，它们在协同作战呢——那些虎鲸正往鲸的出气孔上扑去，不让它呼吸。

【点拨】

stop it breathing 阻止它呼吸

stop sth. 使停止，终止      

stop doing 停止做某事       

stop to do 停下来去做另一件事

stop sb.(from) doing 阻止(防止)某人做某事。如：

Stop talking, please. It’s time to have the meeting.

Let’s stop to have a rest.

Don’t stop me (from) swimming in the lake. 

【拓展】

keep sb. from doing 阻止某人做某事

protect …from 保护……免受侵害

【注意】 stop sb. (from) doing和prevent sb. (from) doing中的from可以省略，但是keep sb. from doing中的from不能省略。另外，如果三个词组用于被动语态中，则from都不能省略。如：

A big snow kept us from climbing the mountain.

My illness prevented/ stopped me (from) going abroad.

I was prevented/ stopped/ kept by my illness from going abroad.

You must wear a hat to protect yourself from the sun.

【强化训练】

(1) 我读了一会书，然后停下来看电视。

    I read for a while and then______ _______ ______TV.

(2) 教练告诉队员们不要停止跑步。

    The coach told the players______ _______ ______.

(3) 是什么阻止你上大学的？

    What ______ _______ ______going to university?

(4) 墨镜能保护你的眼睛不被阳光曝晒。

    Sunglasses can ______ _______ ______the sun.

(5) 在古代，女子被阻止参加奥运会。

    In old times women______ _______ ______ taking part in the Olympic Games.

Key: (1) stopped to watch

       (2) not to stop running

(3) prevented/stopped/kept you from

(4) protect your eyes from  

(5) were prevented/ stopped/ kept from