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這個引導賓語從句的that可省略嗎

■請先看下面一道題:

He says __________ he is attacked he will certainly counterattack.

A. if                         B. that                        C. if that                        D. that if

■此題應選 D。容易誤選 A。其實此題也可將詞序改為。如：

He says that he will certainly counterattack if he’s attacked. 他說他若受到攻擊，他一定會反擊。

按照語法規則：當主句與賓語從句之間插有其他成分時引導賓語從句的that通常不能省略。如。如：

◆她答應要是誰找到他的兒子，她會給他一大筆錢。

正：She promised (that) she would give him a lot of money if anyone found her son.

正：She promised that if anyone found her son she would give him a lot of money

誤：She promised if anyone found her son she would give him a lot of money

◆他說等他妻子回來，他就離開。

正：He said (that) he would leave when his wife came back.

正：He said that when his wife came back he would leave.

誤：He said when his wife came back he would leave.

◆她在信上說她愛我。

正：She said (that) she loved me in the letter.

正：She said in the letter that she loved me.

誤：She said in the letter she loved me.(www.nmet168.com)