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SBⅠUnits 19-20 重点句型 1. It is on this arable land that the farmers produce food for the whole population of China. (SBⅠ U19) 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”。 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。 (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。 (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。 (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. | 
