高一年级 必修三名词性从句语法专题(一)主语从句(Noun Clauses as the Subjec)I. RevisionWhat part does the underlined part serve as in each sentence?A tree has fallen across the road ・You are a student.To find your way can be a problem. Smoking is bad for you. “ How do you do?is" greeting. What she said is not yet known. That we shall be late is certain. It is certa in that we shall be late ・II ・ Learning subjective clausesStep 1 划出主语从句，初步识别主语从句How you got me bli nd is still a mystery.That she had won the first p rize made the girl very happy.When and where we will hold the meeting hasn' t been decided.Whether we go by train or by boat makes no differe nee.Who will host the meeti ng is still a serious p roblem・Whoever comes to Chi na is welcome・・Ste P 2 看以下的主语从句，总结主语从句的位置特点。阅读第四单元的课文，分析下列文中的主语从句，并进行小组讨论。1.What it was to become was un2certa in un til betwee n 4 ・ 5 and3.8 billio n years ago.What is eve n more imp orta nt is that as the earth cooled dow n, water bega n to app ear on its surface ・3. What many scie ntists believe is that the con ti nued p rese nee of water allowed the earth to dissolve harmful gases and acids intothe ocea ns and seas・4. Why they sudde niy disa pp eared still rema ins a mystery・c So whether life will con ti nue on the earth for millio ns of years to come will depend on whether thisp roblem will be solved ・先划分句子，归纳出主语从句所在的位置，根据以上主语从句实例，Ste p 3 学 习土 后从句 的土要连接词1）从属连词：that, whetherthat 引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。That she left him cut him to the heart.That he will come is certa in.Whether 有词义，...
