5. If you had_____________________ ( 聽從了我的勸告，你就不會陷入麻煩）
表示與過去事實相反的虛擬條件句。其句子結構為：
從句: If+ 主語+had +過去完成式動詞 + ……
主句：主語+ would (should, could, might) + have +過去完成式動詞 +……
key：taken my advice, you would not be in trouble /have made such a mistake.
練習：
1.Though you stay in the sea for weeks, you will not____________( 失去聯(lián)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:
lose contact with
【超級短語】lose contact with/lose touch with與……失去聯(lián)系
are being developed
【超級句型】"be being done"現(xiàn)在進行時的被動語態(tài)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。
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(chǎn)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(xiàn)"、"達成",著重"造成"一種特殊的效果,如:This book effected a change in my opinion.
can't have been cleaned
【超級句型】"情態(tài)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(tài)動詞后則用完成形式。
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。