Book 3 Unit 4GrammarSubjective clause主语从句课件.ppt

Book 3 Unit 4GrammarSubjective clause主语从句 精品文档 划出下列句子的主语，并分析它们的词性。 The universe began with a “Big Bang”. It exploded loudly with fire and rock. To see is to believe. Seeing is believing. 名词、代词、不定式和动名词 That he finished writing the composition in such a short time surprised us all. 精品文档 Subject clauses in reading I What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. What is even more important is that as the earth cooled down, water began to appear on its surface. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. 精品文档 Subject clauses in reading I Why they suddenly disappeared still remains a mystery. Whether life will continue to on the earth for millions of years to come will depend on thether this problem can be solved. The earth became so violent that it was not clear whether the shape would last or not. It was not immediately obvious that water was to be fundamental to the development of life. 在复合句中充当主语的句子---主语从句 It做形式主语，从句做真正的主语。 精品文档 引导词 He has been admitted to a key university makes his parents happy. That：只有连接作用，不做成分，无意义，但不 能省略。 引导词 1.That he won the first place in the competition made us proud. 2.That Goddafi was shot to death shocked the whole world. That 精品文档 1.Whether he will accept the job is important to us. 2.Whether the Amber Room still exists in the world remains a mystery. 引导词 Whether 在句中只起连接作用，不做成分， 有意义 “是否　” ＿＿＿ the newly-wedded couple will go to Paris is not known yet. A.What B.whether C.If D.That If 不能引导主语从句。 精品文档 1.Who took away the important paper makes no difference. 2.What surprised me most was that the two-year- old boy can recite over 70 poems. 3.Which team he will join is none of my business. 引导词 连接代词who, what, which 等，不止起连接作用，还做主语，宾语，表语，有意义，不省略。 _____is known to all is that