14) It didn’t rain last night. _______________(要是下了，地就会湿的).
15) _______________(如果我一直住在纽约), I would know the U.S. well now.
16) If the doctor had not come in time, _______________(他现在就不在人间了).
17) But for his help, _______________(我们就不会以这么低的价格租到房子了).
18) I used my calculator; _______________(否则，我会花更长的时间才能算出这道题).
19) Were I in your place, _______________(我会毫不犹豫地抓住机会).
20) Had it not been for their opposition, _______________(这项法案早就通过了).
六、不定式
1) It was a great achievement _______________(10个月建成一栋24层的楼).
2) It is necessary _______________(我们在考试前好好地睡一晚上觉).
3) It is generous _______________(你把这么多钱捐给灾区人民).
4) The teacher decided _______________(不惩罚那些上课迟到的学生).
6) The gardener _______________(刚才警告我不要在中午给花浇水).
7) We _______________(请他给我们做有关现代艺术的讲座).
8) He feels it challenging _______________(在这么大一所大学做学生会主席).
9) We hope to have more opportunities _______________(把我们在课堂上学到的东西应用于实践).
10) The bad weather _______________(破坏了我们在露天放电影的计划).
11) The environmentalists are against _______________(在郊区建一座核电站的决定).
12) Sally Ride was the first _______________(探索外部空间的美国妇女).
13) They lifted a rock _______________(结果砸了自己的脚).
14) He was surprised _______________(在这个山村遇见一个中学同学).
15) I am sorry _______________(占用了您这么多时间).
16) I happened _______________(在他冲进来的时候站在门口).
17) She doesn’t like _______________(被当作客人).
18) If you want to save money, you’d better _______________(到校园书店买旧书).
19) We did nothing _______________(除了整天打桥牌).
20) We were made _______________(进屋之前在垫子上擦擦脚).
