12.Read the text a second time and you will probably know wh

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12.Read the text a second time and you will probably know what the principle ______ a hovercraft works.
A.is on that
B.has on which
C.is on which
D.on which

D.
再问： D是错的
再答： C what the principle is 是know的宾语从句，又用了on which引导了 principle 的定语从句
再问：那“is”是不是可以放在最后变成 what the principle on which a hovercraft works on is？
再答：不可以放在最后。因为what the principle is 是整体的一个句子，不能拆开，否则会引起混乱的。
再问：不是定语从句紧跟先行词吗？
再答：在为了避免引起混乱的时候，语法上就用“割裂定语从句”来表达，正如本题。

12.Read the text a second time and you will probably know wh 定语从句一道选择12.Read the text a second time and you will probably you read the text a second time Read the text a second time,and the meaning will become clea ——— the text a second time,the meaning will become clearer t 1.____ the text a second time,the meaning will become cleare Read the text _______(go)and you will find the answer. 这个题选择什么?——— the text a second time,the meaning will become c It's time ___ you to read the text You read the story about Jane Goodall a second time . You wi Read Text A and answer the following questions怎样翻译 The book is well wortn_____(read)a second time.