Tom works very hard at his lessons.He did not get the first in the exam.

A.howeverByetC.thoughDalthough我选了B答案是C能解释一下吗... A. however B yet C.though D although
我选了B 答案是C 能解释一下吗
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2011-08-28
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but 是连词,连接两个并列句,中间用逗号隔开。表示转折
如: I wanted to buy a book, but I don't have enough money.
though 是副词,但在句中的成分相当于连词。引导从句,不能与but 连用,可以放句首或者句中。意思是尽管,though 和although不可以与but连用,解释如下:
1.(al)though 是从属连词连接一个从句,but是并列连词连接一个并列句,一个句子要么是主从句要么是并列句,所以两者不可能出现在同一个句子中,只能单个使用:
Although it was expensive, we decided to buy the computer.=The computer was expensive,but we decided to buy it.
2. however语气比but强,但由于同样的理由不能与(al)though 出现在同一个句子中。

如:Though it is so hot I have to go outside.
I have to go outside though it is so hot.
however 也是副词,剧中成分相当于连词。可以放在句首或句中,后面一定要用逗号。表转折。放句首时,与前面的句子是转折的连接。放句首时,前后用逗号隔开
如:I wanted to buy a book, however, i do not have enough money.

区别:①although和though同义,在一般情况下,可以互换使用。只是though较普遍,常用于非正式的口语或书面语中,而although则较为正式。另外although语气比though重,常用以强调让步概念。

e.g. Though/Although my car is very old, I don't want to buy a new one.

虽然我的汽车很旧,但我不想买一辆新的。

He insisted on doing it although I warned him not to.

虽然我警告他不要做,但他仍然坚持要做。

②even能和though组合表示强调,但even不能和although组合。因此,不能说even although,在这里even though=even if(no matter if; though即使……也……)

e.g. Even if/Even though we could afford it, we wouldn't go abroad for our vocation.

即使我们付得起这笔钱,也不出国度假。

③当让步状语从句指某种假设情况时,通常用though,而不用although。

e.g. Though all the world were against me, I should still hold to my opinion.

就算全世界都反对我,我还是坚持我的立场。

Though everybody deserts you, I will not.

即使所有人都抛弃你,我也不会的。

④though可以独立用作副词,常放在句末,意为all the same (还是;仍然)或however(可是;然而),而although无此用法。

e.g. She didn't tell me what she had done, but I know it though.

她没有告诉我她所做的事情,但我还是知道了。

It's hard work. I enjoy it, though.

工作很苦,可是我喜欢。

⑤though引导让步状语从句时可以倒装,而although从句则不能。

e.g. Bravely though they fought, they had no chance of winning.

虽然他们打得很勇敢,但还是没有机会获胜。

相同点:①在although和though引导的让步状语从句中,主句里不可用but,若要强调前后两部分的对比意义,可在主句前加yet或still。

e.g. Although/Though he has a lot of money, yet/still he is unhappy.

他虽然有很多钱,但并不幸福。

②although和though引导让步状语从句时,常采用省略形式。

e.g. Although tired (=Although he was tired), he kept on working.

虽然很疲劳,但他继续工作。

The problem, though complicated(=though it is complicated), can be solved without much difficulty.
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