在復(fù)合句中充當同位語。
1. that引導(dǎo)同位語從句。
? ?在下列名詞后可用that引導(dǎo)同位語從句answer, belief,doubt, fact, hope, idea, information, knowledge, law, news, opinion, plan, suggestion, thought, truth等。
? I had no idea that you were here.
? The story goes that william killed his wife.
注意
?①同位語從句引導(dǎo)詞that無含義，不充當成分，不可省略。
?②同位語從句與其說明的名詞或代詞為同一內(nèi)容,故可以用is把前邊的中心詞和從句連接成一個句子。
?③同位語從句前一般沒有逗號。
?that引導(dǎo)同位語從句與引導(dǎo)定語從句的區(qū)別：
?that引導(dǎo)同位語從句時只起連接作用，不充當任何成分；
?that引導(dǎo)定語從句時，在從句中要作成分，如主語、賓語等。
?①He told me the news that our team won.（that引導(dǎo)同位語從句）
?②The news that / which he told me was very exciting.（that引導(dǎo)定語從句，在從句中作賓語）
2.在no idea, question, problem等后可用wh-疑問詞引導(dǎo)同位語從句，if不引導(dǎo)同位語從句。
? ?I have no idea where he has gone. ? i have no idea what he said.
3.辨析:引導(dǎo)名詞性從句時what與whatever, who與whoever的區(qū)別：
? ?what 與whatever：
? ?What you want has been sent here.? ( what = the thing(s) that/all that/anything that特指)
? ?Whatever you want makes no difference to me.(whatever = anything that泛指)
? ?What caused the accident was a broken bottle.（特指）
? ?Whatever caused the accident has not yet been found.（泛指）
? ?who 與whoever ：
? ?Who will go to beijing on business has not been decided.(who表疑問，表示“誰”，“哪一個”)。
? ?Whoever breaks the law should be punished.(whoever = anyone who，表示“無論哪個人”)