1(1)231. It is on this arable land that the farmers produce food for the whole population of China. (SB U19)Ⅰ 就是在这些耕地上中国农民为全国的人口生产食物。 强 调 句 型 “ It is(was)+ 强 调 部 分+that(who) ＋其他部分”。4使用强调句型应注意的几个问题： (1) 强调主语时，从句谓语动词的人称和数要与被强调的部分一致（即与原主语一致）。 It is I who/that am your true friend.我才是你真正的朋友。5(2) 如果对 not until 时间状语进行强调，这个 not 必须移到 until 前边去。It was not until 1920 that regular radio broadcasts began. 直到 1920 年，正式的收音广播才开始。6(3)What/Who/When/Where/Why/How+is/was it that...?Why was it that she did it? 她到底为什么要做那件事？(4) 强调句中含有定语从句的情况It was in the cinema where they met for the first time that they got together every year. 他们就是在首次见面的电影院每年聚会一次。7(5) 强调句在名词性从句中都要用陈述语序。I want to know whose pen it was that he borrowed just now.我想知道他刚才借的笔是谁的。How it was that he had solved the problem was still a mystery. 他是怎样解决这个问题的，始终还是一个秘密。8①__________________( 直 到 车 子 停 下 来 ) that I got off the bus. ②__________________( 是 约 翰 ) I met yesterday at the school gate. ③__________________( 是 谁 ) always making fun of him because of his accent? ④I wonder __________________( 到底为什么 ) she did it.9【答案】①It was not until it had stopped②It was John that/who③Who is it that④why it was that102. … when possible (SB U19)Ⅰ…… 当有可能时状语从句中可省略一些部分（常常省略的是主语和动词 be ）when / whenever / if (it is / was) possible / necessary…11①Please rewrite the composition ____________________________( 有可能的话 ) ．②Tell it to your parents __________________( 必要时 ) ． ③— Some of you may have finished unit one, ______ ， you...
