译林版选修7 Unit 1 Living with technology 知识点复习三学案.docx

选修7 unit 1 living with technology学案知识点复习三句型解析1【教材原句】it was found that after eighteen months，the first half had more than twice the cancer rate of the second half.(p14)人们发现，18个月后，受辐射的老鼠患癌症的比例是未受辐射的老鼠的两倍多。【句法分析】该句使用了倍数表达法之一即“倍数the名词(size，length，width)of其他”。倍数表达的句型：(1)a谓语动词倍数as形容词的原级asb(2)a谓语动词倍数比较级thanb(3)a谓语动词倍数the名词(size，length，width，price，height.)ofb1. peters jacket looked just the same as jacks，but it cost_his.aas much twice asbtwice as much ascmuch as twice as das twice much as解析：选b。考查倍数表达法。b项为固定的倍数表达法，即“倍数asadj./adv.as比较对象”结构。2. my uncles house in the downtown area is much smaller than ours，but it is twice _expensive.aas bsoctoo dvery解析：选a。考查倍数句型及其省略。这里是倍数句型：倍数asadj./adv.as。这里省略了as ours。3ten years ago the population of our village was _that of theirs.aas twice large as btwice as large asctwice as much as das twice much as解析：选b。考查倍数表达法。倍数句型主要有以下三种：(1)a is.times asadj.as b；(2)a is.times the size/length/width/height/depth，etc.of b；(3)a is.timesadj.比较级than b；由题干可知本题是第一种句型，又由于population应用large修饰，而不能用much修饰。4. i collected _he did for the hope project the day before yesterday.athree times as many money asbthree times much money thancthree times more money thandthree times much more money解析：选c。考查倍数的用法。语意：前天我给希望工程募集的钱比他的多三倍。这里用倍数more名词than句型，这里more是much的比较级，修饰不可数名词money。5a study of more than 18,000 chinese men suggests that green tea drinkers are_to develop stomach cancer as those who drink little or no tea.ahalf as likely blikely half asclikely as half das half likely解析：选a。考查倍数表达法。表示事物对比时，可用“倍数as形容词/副词原级as比较对象”。只有a项正确。2 【教材原句】.but it took 50 years before 66 percent of usa families had it in their homes.(p8)但花了50年时间66%的美国家庭才得以拥有它。【句法分析】before在此译为“才”。before的译法灵活，具体如下：(1)趁还没，以免write down the telephone number before you forget it.趁你还没忘记，把电话号码记下来。(2)才he had walked for a whole day before he found water.他走了一整天才找到水。(3)就i had not waited long before he came back.我没等多久他就回来了。(4)在前he had learned some chinese before he came to china.他来华之前，学过一些汉语。(5)用在it is/was/will be一段时间before，“才”或“就”。it was not long before he left for the united states.不久他就去美国了。it will be four years before we meet again.四年后我们才能见面。6a taxi driver saw a man luckily escape from the building just_it went up in flames.aunlessbuntilcbefore dafter解析：选c。考查状语从句连接词的用法。before在这里引导时间状语从句，表示“在之前”。句意：一位出租车司机看到一个男子在大楼起火之前幸运地逃了出来。7. the american civil war lasted four years_the north won in the end.aafter bbeforecwhen dthen解析：选b。考查时间状语从句。句意：美国内战持续了四年最后以北方胜利才结束。由句意知b项为正确答案。8how long do you suppose it is_he arrives here?nearly five weeks.awhenbsincecafter dbefore解析：选b。问句句意：你猜他来这儿已经多久了？it is一段时间since.表示“以来多久了”，主句时态可以是完成时或现在时。it is.when.表示“当的时间，”；after.表示“以后”；before.表示“在之前”，都与题意不符。9its a long time_i saw you last.yes，and what a pity！it will be a long time_we see each other again.asince；before bwhen；whencsince；when dbefore；since解析：选a。its/it has been一段时间since.；it is/was具体时间点when.；it will be/was一段时间before.；it is/was时间状语that.是强调结构。由这几种固定句型的构成不难看出只有a项正确。10. the police helicopter managed to land on the roof