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一、高頻考點
1.主語從句
(1)what和that的選用
what和that都能夠引導名詞性從句，但是在名詞性從句中，that只能起連接作用，無詞義，不充當句子成分，而what在名詞性從句中既起連接作用，又充當主語、賓語或表語，意思是“所……的東西(事情)”。如：
What surprised me most was that such a little girl could play the violin so well.
(2)whether和if的選用
whether能引導主語從句，而if不能。
2.賓語從句
(1)what在賓語從句中有代替名詞的作用，在句中可作主語、賓語或表語;that只起引導作用，不作任何成分，可省略。如：
He seems different from what he used to be. (作表語)
(2)賓語從句中復合關系代詞whoever, whichever, whatever等有代替名詞的作用。如：
You may do whatever (anything that) you like.
3.同位語從句與定語從句的區(qū)別
(1)同位語從句與前面的名詞是同位關系，說明它前面名詞的內容;屬于名詞性從句范疇。定語從句與前面的名詞是修飾與被修飾關系，限定前面名詞范圍，屬于形容詞性從句范疇。
The news that l have passed the exam is true.
The news that he told me just now is true.
(2)引導同位語從句的that是連詞，在從句中不充當任何成份，而引導定語從句的that是關系代詞，除了起連接作用外，還在從句中充當主語、賓語或表語等。如：
The idea that computers can recognize human voices surprises many people.
The idea that he gave surprises many people.
二、每日一練
1. After _____ seemed an endless wait, it was her turn to enter the chief manager’s office.
A. that B. it C. what D. there
2. _____ impressed me most in the movie was the father’s deep love for his son.
A. That B. It C. What D. Which
3. When the British singer got a bleeding throat, the rumor_____ she would never sing again soon spread.
A. what B. which C. that D. as
4. _____ some teenagers don’t realize is _____ difficult life can be after they get addicted to drugs.
A. What, how B. That, how C. What, what a D. That, what
【答案】CCCA
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