練習題

1.Though you stay in the sea for weeks, you will not____________( 失去聯系 ) the outside world.

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

3.How close parents are to their children_________________ __( 有很強的影響 ) the character of the children.

4.The room is in a terrible mess; it _____________________ （肯定沒打掃過） .

5.With tears on her face, the lady _____________________ (看著他受傷的兒子被送進手術室）

答案及解析：

1.lose contact with
【超級短語】lose contact with/lose touch with與……失去聯系

2.are being developed
【超級句型】"be being done"現在進行時的被動語態表示此時此刻某事正在被做。其中動詞be應隨主語作相應變化。

3.has a strong influence on/effect on
【超級短語】influence/effect作名詞（常與on連用）對…有影響力。
influence指"通過說服、舉例等對行動、思想、性格等產生不易覺察到的,潛移默化的影響",如:Influenced by a high-school biology teacher, he took up the study of medicine.
effect指"實現"、"達成",著重"造成"一種特殊的效果,如:This book effected a change in my opinion.　

4.can't have been cleaned
【超級句型】"情態動詞+have done"表示推測，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不能用于疑問句中。can't表示不可能，may not表示可能不。如題中推測的為過去的事情，情態動詞后則用完成形式。

5.watched her injured son sent into the operation room.
【超級句型】see/watch…sb./sth.+done強調某動作的全過程，且賓語和動作間是被動關系。