【三维设计】2013高中英语Unit21HumanBiologySectionⅣ语言点三应用落实课下作业北师大版选修7Ⅰ.完成句子1.Heworkeddayandnightso_that_he_could_support_his_family.他夜以继日地工作,为的是养活全家。2.It_seems_thattheyknowwhatthey'redoing.看来,他们知道自己在干什么。3.It_is_reported_thattheproductionhasbeenputintouse.据报道,这种产品已投入使用。Ⅱ.单项填空1.________disappearedastimewentonthathewasafraidofclimbinghighmountains.A.ItB.ThatC.WhatD.Which解析:选A。考查it作形式主语。句意:随着时间的推移,他对爬高山的恐惧感消失了。首先忽略astimewenton这一时间状语,就会发现that从句是真正的主语,而四个选项中只有it可作形式主语。2.Johnshuteverybodyoutofthekitchen________hecouldpreparehisgrandsurprisefortheparty.A.whichB.whenC.sothatD.asif解析:选C。句意:John把大家关在厨房外,目的是他要给这个聚会准备一个大惊喜。sothat引导目的状语从句。故选C。1