四、一般疑問句可分別充當四種句子成分。1、一般疑問句語序變成陳述語序。2、用來whether或if引導。

　　1.主語從句: does she love dog-walking?

　　Whether she loves dog-walking or not is unknown.

　　2.賓語從句:

　　I don’t know if/whether whether she loves dog-walking

　　3.表語從句:

　　My concern is whether you are a student or not.

　　4.同位語從句:

　　They are faced with the problems whether they should continue to play.

　　補充：if whether區別

　　1)if一般用于引導賓語從句，而whether可引導所有名詞從句

　　If he comes or not makes no difference.

　　The question is if he will arrive.

　　2)if 不和or not直接連用，一般不說 if or not。但可以說 if … or not 。而whether沒有此限制。

　　I don’t know if or not he arrives.

　　I don’t know whether or not he arrives.

　　五、特殊疑問句可分別充當四種句子成分。特殊疑問句變成陳述句語序。

　　There arose the question where we could get the loan.

　　I have no idea what gender he is.

　　Why he refused to cooperate with us is still a mystery.

　　I don’t know how many letters I have written to her.

　　NBA is what I am crazy about.

　　How China should develop next is a serious problem.

　　Excuse me, can you tell me where the post office is?

　　My question is where we are going to have our holidays.

　　The point is whose book is the most horrible.

　　Whoever comes will be welcomed.

　　Whatever is left over is yours

　　Do whatever you please.

　　Read whichever books you please.

　　I'll give it to whichever of you wants it.

　　P.S. 最后說明：同位語從句多用that引導，少用whether, if以及代詞或副詞引導，因為我們多是用陳述句補充名詞的內容，而少用一般疑問句或特殊疑問句來補充名詞的內容。

　　溫故知新：名詞從句就是用三種句子來分別充當另外一個句子的四種句子成分。