摘要：if省略句 在条件句中.可省略if把were.had.should提到句首.变为倒装句式.如果谓语动词是否定形式时.不能用动词的缩略形式. 例如: Should it rain tomorrow; we would not go fishing. Were it not the expense, I would go abroad now.
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单句改错（共5小题，每小题1分，共 5分。每句只能改一处,在原句中直接改正）
1.Air hostesses all smile when they serve for the passengers.
2.No one matches him when it comes to swim.
3.A poor nourished body needs more energy to combat disease.
4.Foreigners always associate China to the Great Wall.
5.Not until then he realize the importance of the problem.
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单句改错（共5小题，每小题1分，共 5分。每句只能改一处,在原句中直接改正）
【小题1】Air hostesses all smile when they serve for the passengers.
【小题2】No one matches him when it comes to swim.
【小题3】A poor nourished body needs more energy to combat disease.
【小题4】Foreigners always associate China to the Great Wall.
【小题5】Not until then he realize the importance of the problem.
句型转换
在B 句中填入合适的词, 使之在意义上同A 句相同或相近.
1. A: "Have you ever seen him?" asked the boss.
B: The boss asked me_______ _______ _______ ever seen him.
2. A: They seem to know what they are doing.
B: _______ _______ _______ they know what they are doing.
3. A: Do you know the girl in our school, the parents of whom are English?
B: Do you know the girl in our school _______ parents are English?
4. A: In the terrible earthquake, many people asked the government for help.
B: In the terrible earthquake, many people _______ _______ the government _______help.
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在B 句中填入合适的词, 使之在意义上同A 句相同或相近.
1. A: "Have you ever seen him?" asked the boss.
B: The boss asked me_______ _______ _______ ever seen him.
2. A: They seem to know what they are doing.
B: _______ _______ _______ they know what they are doing.
3. A: Do you know the girl in our school, the parents of whom are English?
B: Do you know the girl in our school _______ parents are English?
4. A: In the terrible earthquake, many people asked the government for help.
B: In the terrible earthquake, many people _______ _______ the government _______help.