Our math teacher is very kind ______ he looks very serious.A．becauseB．thoughC．if

题型：不详难度：来源：

Our math teacher is very kind ______ he looks very serious.

A．because

B．though

C．if

D．when

答案

解析

试题分析：because因为；though虽然，尽管；if是否，如果；when当……时。句意：尽管他看起来很严肃，我们的数学老师很和蔼。结合语境可知选Ｂ。
点评：连词在句子中主要起联系上下文的作用，他们之间的区别就是表示逻辑关系的不同，所以在解题时先要理解上下文含义，然后根据上下文逻辑关系选择合适的连词。连词的用法都比较多，语义之间还有交叉，熟记其基本应用规则，了解其区别，注意固定搭配对象，是做好此类题型的关键。

举一反三

I have to leave now __ I can catch the last bus.

A．so that

B．because of

C．until

D．as soon as

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—Yes, ___________ she doesn’t buy any thing on line.

A．but

B．or

C．and

D．so

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I have ____a raincoat _____ an umbrella. That’s why I have to wait until the rain stops.

A．both; and

B．either; or

C．neither; nor

D．not only; but also

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---Finish your homework __________ you can’t play computer games, Jim.
---All right, Mum.

A．but

B．till

C．and

D．or

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David, get up early, ________ you’ll catch the early bus.

A．but

B．and

C．after

D．or

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