Unit 3 Grammar 知识点整理及练习 牛津译林版英语九年级下册讲义(含答案)

9BU3 Grammar 简单句和复合句之间的转换（一） 把一个简单句转换成一个复合句，一般是将一个短语变为一个从句。相反，复合句转换为简单句时要把一个从句变为一个短语。 1.含宾语从句的复合句变为简单句，可以把宾语从句改为“主语+宾语+宾语补足语”的形式。 I find it is hard to work at home because there are too many distractions. =I find it hard to work at home because there are too many distractions. 我发觉在家里工作很难，因为使人分心的事太多。 2.含宾语从句的复合句变为简单句，可以把宾语从句改为“疑问词+不定式”的形式。 I don't know what I can do next. =I don't know what to do next. 我不知道接着该做什么了。 3.当so...that从句是否定句，其主语与主句主语相同时，可用句型too...to do sth.替换。 I’m so tired that I can’t go any farther. =I’m too tired to go any farther. 我太累了，不能继续走了。 4.当so...that从句是否定句，其主语与主句主语不相同时，可用句型too...for sb. to do sth.替换。 It's so hot today that I can't work. =It's too hot today for me to work. 今天太热了，以致于我无法工作。 5.当so...that从句是肯定句，其主语与主句主语相同时，可用句型...enough to do sth.替换。 He is so clever that he can solve the problem quickly. =He is clever enough to solve the problem quickly. 他太聪明了，很快就解决了这个问题。 6.当so...that从句是否定句，其主语与主句主语不相同时，可用句型...enough for sb. to do sth.替换。 The ice on the lake was so