1、【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They came back before long.他们很快就回来了。I knew Tom long befor
2、e 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。She can sing the song in English.她能用英语唱这首歌。He 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。Luckily, he was able to escape from the big fire i
3、n the end.幸运的是，他终于逃出了大火。If 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。He is / was / will be able to help you.他能帮你的忙。I could help you last night, but you didnt 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。You are able to
4、use my pen. (误)You 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。The work is able to be done by him. （误）He 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waswere able to。I talked with her for a long time,and eventually I was able to make her believe m
5、e.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She is having a facial massage.她正做脸部按摩。Ive 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
6、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 .He had a passive expression on his face.他脸上有一种漠然的表情。The 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 A had to B would C could D was able to版权所有：高考资源网()版权所有：高考资源网()