练习题
11.　Though you stay in the sea for weeks, you will not____________( 失去联系 ) the outside world.

12.　The fifth generation computers, with artificial intelligence,_____________( 正在研制 ) and perfected now.

13.　How close parents are to their children_________________ __( 有很强的影响 ) the character of the children.

14.　The room is in a terrible mess; it _____________________ (肯定没打扫过).

15.　With tears on her face, the lady _____________________ (看着他受伤的儿子被送进手术室)
参考答案

11. lose contact with　　
「超级短语」lose contact with/lose touch with与……失去联系

12. are being developed　　
「超级句型」"be being done"现在进行时的被动语态表示此时此刻某事正在被做。其中动词be应随主语作相应变化。

13. has a strong influence on/effect on
「超级短语」influence/effect作名词(常与on连用)对……有影响力。
influence指"通过说服、举例等对行动、思想、性格等产生不易觉察到的,潜移默化的影响",如:Influenced by a high-school biology teacher, he took up the study of medicine.
effect指"实现"、"达成",着重"造成"一种特殊的效果,如:This book effected a change in my opinion.

14. can't have been cleaned　　
「超级句型」"情态动词+have done"表示推测，

must/can/may/might/could各用于不同句型中，must只用于肯定句中，can/could不能用于肯定句中，may/might不能用于疑问句中。can't表示不可能，may not表示可能不。如题中推测的为过去的事情，情态动词后则用完成形式。

15. watched her injured son sent into the operation room.　　
「超级句型」see/watch……sb./sth.+done强调某动作的全过程，且宾语和动作间是被动关系.