whether 和 no matter的区别

no matter 后面接what when who
1. 词组no matter可独立成句，也可在句中担当成分。如：

1) No matter! 不要紧！

2) No matter, I'll go myself. 不碍事，我自个儿去。

3) No matter if they do not take this factor into consideration. 如果他们不考虑这个因素，那无关紧要。

4) It is (of ) no matter. (no matter在句中作表语或of的宾语。) 这无关紧要。

5) I had something to say, but it's no matter. 我本来有句话要说，但不是很重要。

2. 词组no matter在it作形式主语、真正主语位于句末的句子中作表语。如：

1) It is no matter that he didn't phone. 他没打电话没关系。

2) It made no matter to him that his brother lost all his money. 他哥哥把所有的钱都弄丢了，这对他来说是无关紧要的。

3) It's no matter whether you get there early or late. 不论你到那里早或晚都无关紧要。

3. no matter与疑问词who, what, where, when, how, if, whether等连用，意为“无论，不管”。如：

1) Don't open the door, no matter who comes. 不管谁来都别开门。

2) Don't trust him, no matter what he says. 无论他说什么，都别相信他。

3) No matter whe