100句搞定高考7000词:第14期

所属专题:100句搞定高考英语7000词汇  来源:沪江部落    要点:100句搞定高考核心词汇  
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【句子】

Long before children are able to speak or understand a language, they communicate through facial expressions and by making noises.

儿童在能说或能听懂语言之前,很久就会通过面部表情和靠发出噪声来与人交流了。

【解析】

1.before long 和long before 的区别:

before long 不久以后,很快;long before 很久以前

①They came back before long.
他们很快就回来了。

②I knew Tom long before I knew you.
我在认识你之前很久就认识了汤姆。

2.be able to与can的区别:

1)be able to 强调通过努力而获得的能力,而can则强调自身已具有的能力。

①She can sing the song in English.
她能用英语唱这首歌。

②He will be able to sing this song in English in a few minutes, too.
几小时之后,他也能用英语唱这首歌。

2)be able to 强调一种结果,而can只强调一种可能。

①Luckily, he was able to escape from the big fire in the end.
幸运的是,他终于逃出了大火。

②If he got here a few hours earlier, I could save him.
要是他早几小时来,我还能救他。

3)be able to 可以有各种时态;而can只有一般现在和一般过去两种时态。

①He is / was / will be able to help you.
他能帮你的忙。

②I could help you last night, but you didn’t come.
昨天晚上我能帮你,而你又没来。

4) can可用于表示可能性,推测,允许等情况,而be able to通常不这样用。

①You are able to use my pen. (误)
②You can use my pen. (正)

5)can有被动语态,主语为人或物皆可,而be able to只接不定式的主动形式,不接表示被动的不定式,也不可用无生命的名词作主语。

①The work is able to be done by him. (误)
②He is able to do the work.(正)

注意:指过去某时或某个时刻设法做成某事,不用could,而用was\were able to。

I talked with her for a long time,and eventually I was able to make her believe me.
我谈了很久,最终还是使她相信了我的话。

3.facial n.面部护理;美容 a.面部的

①She is having a facial massage.
她正做脸部按摩。

②I've made an appointment for a facial next week.
我已经预约了下周去美容。

4.expression n. 表情,表示,表达,词句,措辞,表现

【近义词】

face n.表面,脸;v.面对,面向          look v.看,寻找;n.看,样子
manifestation n.表现,示威运动    saying n. 谚语,俗话;动词
communication n.交流,通讯        appearance n.出现,露面
countenance n.面容,面部表情;v.赞.. phrase n.短语,习语;vt.措词...
idiom n.成语,惯用语                  term n.学期,术语;vt.把 ...

①He had a passive expression on his face.
他脸上有一种漠然的表情。

②The scenery was beautiful beyond expression.
那风景美丽得无法形容。

【练习】

The fire spread through the hotel very quickly but everyone ______ get out.(NMET’97)

A had to  B would  C could  D was able to

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