He did not work out the problem _______ I explained how to him.

A. until     B. unless

C. when     D. even

 

A until/till引導(dǎo)的結(jié)構(gòu)與肯定句連用時，主句謂語動詞為延續(xù)性動詞，其動作延續(xù)到until/till所表示時間就停止。until/till引導(dǎo)的結(jié)構(gòu)與否定句連用時，構(gòu)成not…until/till…結(jié)構(gòu)，主句所表達的動作直到until/till所表示的時間才發(fā)生，譯成“直到…才…”。

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科目：高中英語 來源： 題型：

_____ I shouted at the top of my voice _____ turn his head.

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The light from the campfire brightened the darkness, but it could not prevent the damp cold of Dennis’s Swamp (沼澤地) creeping into their bones. It was a strange place. Martin and Tom wished that they had not accepted Jack’s dare. They liked camping, but not near this swamp.

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“Are you sure you want to hear it ? It’s a scary story,” warned Jack.

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8.                A．At             B．From           C．With D．To

 

9.                A．finding         B．putting         C．forgetting D．leaving

 

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A few years ago, I took a sightseeing trip to Washington, D.C．Standing outside the Ronald Reagan Center, I heard a voice say, “Can you help me?” When I turned around, I saw an elderly blind woman with her hand extended．In a natural reflex (反應(yīng)), I reached into my pocket, pulled out all of my loose change and placed it on her hand without even looking at her．I was annoyed at being bothered by a beggar．But the blind woman smiled and said, “I don’t want your money．I just need help finding the post office.

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