1、人教课标高二 选修 6Unit 4Go over the new words and phrases in the previous sections.Then complete each sentence with one of those new words or phrases.21.Charles Keeling collected _ on the carbon dioxide content in the atmosphere over a forty-year period.He found that the amount of carbon dioxide _ increasi
2、ng during that time.datakept on2.Although we are burning coal in huge _ every year,we wont _ of it for centuries.3.If the amount of greenhouse gases continues to _,we could be facing a global _.quantitiesrun outbuild upcatastrophe4.Many scientists believe that global warming has _ through the burnin
3、g of fossil e about5.The _ of a rising sea level would be widespread flooding.consequence6.On the whole the warming of the earth is a _ that causes great concern.7.The _ shows temperature changes during the 20th century.8.One hectare of forest can absorb 23 tons of carbon dioxide _ year.phenomenongr
4、aphper9.The washing machine uses too much energy,but _ we buy a more economical one,it would still use too much water.10.The car accident on the main road yesterday _ one drivers death.even if resulted in 由it引导的强调句结构：It is(was)+被强调部分+that(who)+句子其他部分注意：此结构强调的成分仅限于主语，宾语和状语。ExplanationIt was in that c
5、ity that we met for the first timeIt was not until he told me that I knew the truth原句：My father did the experiment in the lab yesterday eveningl 强调宾语：It was the experimentthat my father did in the lab yesterday eveningl 强调主语：It was my father who/that did the experiment in the lab yesterday eveningl
6、强调地点：It was in the lab that my father did the experiment yesterday eveningl 强调时间：It was yesterday evening that my father did the experiment in the lab1)It was last night _ I saw the film Star WarsA.who B.when C.that D.whichC答案C 强调句的结构是：It+be+强调部分+that(who)+主谓句。强调句的连词只有两个，that和who。当强调的部分是人，且为句子的主语时，才
7、用who，其余用that。2)It is ten years _ Miss Green returned to CanadaA.that B.when C.since D.as答案C 考点是连词用法。本题易误选为A其实本句不是强调句。C若是去掉 It be that 还应是一个完整的句子。而本句去掉 It is that,只剩下ten years Miss Green returned to Canada 不成句。因此本句不是强调句。It is+时间+since.，其中 is=has been.1.It was this village _ I was bought.A.where B.tha
8、t C.on which D.which 2.It was in this village _ I was bought up.A.where B.that C.on which D.which3.Was it under the tree _ you were away talking to a friend?Sure.But when I got back there,the bike was gone.A.that B.where C.which D.whileI.根据句意及所给单词的首字母或II.汉语提示，写出所缺单词的正确形式。1.On the w_,I thought the fi
9、lm Animals United was pretty good.2.The a_ age of the boys in this class is twelve years old.3.These creatures were believed to have come from o_ space.outerwholeaverage4.There is a growing _(趋势)for people to work at home instead of in offices.5.There are reports of _(分布广的)flooding in northern Franc
10、e.6.The newspaper didnt appear any longer after being in _(存在)for only three months.existencetendencywidespreadII.根据汉语提示，用强调句型补全下列句子。1._(是在校门口)2.that I met an old friend of mine.2._(是在晚上7点)that we reached the mountain village.3.It is our parents _ _(我们经常向他们寻求帮助).that/whom/who we often turn to for he
11、lpIt was at the school gateIt was at 7 p.m.4.It was our monitor _ _(在考试中获得第一名).5._(那是在去年吗)the building was completed?6._(是在哪里)you met your English teacher?Where was it that who/that won first place in the examWas it last year that7._(是怎么)Susan went to school yesterday?8._(是在前天)that you lost the money,wasnt it?It was the day before yesterday How was it thatMake four sentences with“it”for emphasis.
