四、一般疑问句可分别充当四种句子成分。1、一般疑问句语序变成陈述语序。2、用来whether或if引导。

　　1.主语从句: does she love dog-walking?

　　Whether she loves dog-walking or not is unknown.

　　2.宾语从句:

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

　　3.表语从句:

　　My concern is whether you are a student or not.

　　4.同位语从句:

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

　　补充：if whether区别

　　1)if一般用于引导宾语从句，而whether可引导所有名词从句

　　If he comes or not makes no difference.

　　The question is if he will arrive.

　　2)if 不和or not直接连用，一般不说 if or not。但可以说 if … or not 。而whether没有此限制。

　　I don’t know if or not he arrives.

　　I don’t know whether or not he arrives.

　　五、特殊疑问句可分别充当四种句子成分。特殊疑问句变成陈述句语序。

　　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. 最后说明：同位语从句多用that引导，少用whether, if以及代词或副词引导，因为我们多是用陈述句补充名词的内容，而少用一般疑问句或特殊疑问句来补充名词的内容。

　　温故知新：名词从句就是用三种句子来分别充当另外一个句子的四种句子成分。

　　三种句子：

　　四种成分：

　　这三种句子不是直接放在另个句子中作成分，而是要做以下调整：

　　1)用陈述句作成分时，要在句首加

　　2)用一般问句作成分时，先将疑问句换成语序，然后在句首加

　　3)用特殊问句作成分时，只需将疑问句换成 语序。

　　下面是95年1月份的阅读真题，来感受下几个难句吧，若搞定名词从句，那它们也就是小儿科。

　　It is a curious paradox that we think of the physical sciences as “hard”， the social sciences as “soft，” and the biological sciences as somewhere in between. This is interpreted to mean that our knowledge of physical system is more certain than our knowledge of biological systems， and these in turn are more certain than our knowledge of social systems. In terms of our capacity of sample the relevant universes， however， and the probability that our images of these universes are at least approximately correct， one suspects that a reverse order is more reasonable