= Though he tries hard, he never seems…

虽然他尽了努力，但他的工作总做的不尽人意。

3)　ever if, even though.　即使

We'll make a trip even though the weather is bad.

4) whether…or-　 不管……都

Whether you believe it or not, it is true.

5)　"no matter +疑问词" 或"疑问词+后缀ever"

No matter what happened, he would not mind.

Whatever happened, he would not mind.

替换：no matter what = whatever

no matter who = whoever

no matter when = whenever

no matter where = wherever

no matter which = whichever

no matter how = however

注意：no matter 不能引导主语从句和宾语从句。

(错)No matter what you say is of no use now.

(对)Whatever you say is of no use now.

你现在说什么也没用了。(Whatever you say是主语从句)

(错)Prisoners have to eat no matter what they're given,

(对)Prisoners have to eat whatever they're given.　囚犯们只能给什么吃什么。

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