1. 辨析:on earth, on the earth
on earth
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意为“究竟,到底”。
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on the earth
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在地球上。
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如:Why on earth didn’t you tell me the truth? 你到底为什么不跟我说实话?
Long ago enormous animals lived on the earth.
很久以前,地球上生活着巨大的动物。
2. 辨析: think about, think of, think over
think about
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think about意为“想,考虑”,指考虑解决某一问题,“考虑”的宾语可由名词、代词、动名词、疑问词引导的不定式或宾语从句充当。
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think of
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think of 意为“思考,想起,考虑”。表示“考虑”的含义时,可与think about互换,后接名词、代词、v.-ing形式或疑问词引导的从句。
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think over
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think over意为“仔细考虑”,其中over为副词,如宾语为名词,位于over前后均可,如果是代词,必须置于think与over之间。
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例:I’m thinking about a problem.
我正在考虑一个问题。
He always thinks of others more than himself.
他总是为别人考虑得多,为自己考虑得少。
You’d better think it over before you do it.
在你做这件事之前,你最好先好好考虑一下。