3. used to emphasize the difference between two situations,

activities etc(强调不同)而，当...却

2. something happens at the same time as something else

和...同时

3. used especially in written language after a comma, to add more

information about a specific thing or things, or about the first part

of the sentence (非限定定语从句) 那一个，那一些

whichever[witf`ev ] determiner. pron. 无论哪个，无论哪些

while[wail] conj. 1. during the time that something is happening

在(当)...的时刻；

2. use to show what specific thing or things you mean

(限定关系代词) 那一个，那一些

1. used to ask or state what people or things you mean when a choice

has to be mad 哪一个；哪些

2. used to say that something definitely will or will not

happen whatever the situation is. 不管...还是...

whether...or <1>是...还是

<2>或者...或者,不是...就是

<3>不管...还是

whether or no 不管怎样，无论如何

syn. if

which[witf] determiner. pron. adj.

2. in, towards,or from a particular situation or at a particular situation or at a particular point in a speech, argument etc.

在那里，往那里，在...地方，到...地方

wherever[w 'ev ] adv. 任何地方, 无论何处

syn. no matter where

whether['we ] conj. 1. used when talking about a choice you have to make or about

two different possibilities 是否

2. at the time that 当...的时候

pron. since when used in questions to mean since what time 自...时候起

whenever [wen'ev ] conj. 每当，无论何时

syn. no matter when

where[w ] adv. conj. 1. at,to,or from a particular place or position

去(往)哪里，从哪里

1. at what time 什么时候

2. a flat round part in a machine that turns round when the

machine operates 机轮

v. to push/move someone or something that is an object with wheels

滚动，推动

wheelchair ['wi:l tf ]n. 轮椅

when[wen] adv. conjunction