《Grammar—Subject Clause》教学设计教学目标.docVIP

PAGE PAGE 1 Book Ⅲ Unit 4 Astronomy: the science of the stars Grammar—Subject Clause 邯郸市第七中学 陈艳如 Teaching Aims Enable the Ss to understand and master the usages of the Grammar Teaching Important and Difficult Points: To get Ss to recognize noun clauses as the subject To make sure that they can do some simple exercises. Teaching procedures: Step I Lead in What 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 a greeting. What she said is not yet known. That we shall be late is certain. It is certain that we shall be late. We can see from these sentences that a sentence serves as subject, so we call it Subject Clause. Step ⅡExplanation 主语从句（Noun Clauses as the Subject） 定义： 用作主语的从句叫主语从句，它是名词性从句之一。引导主语从句的连接词有：连词that, whether；连接代词who, what和which；连接副词when, where, how和why。 1) 由what等代词引起的主语从句： What the teacher said today was quite right.? 老师今天说的话是十分正确的。 2) 由连词that引起的主语从句： That they are badly in need of help is quite clear. 他们急需帮助，这是十分明显的。 但是这类句子在大多数情况下会放到整个句子的后部去，而用代词it作形式主语。 3) 由连接代词或连接副词以及whether引起的主语从句。 Whether they will sell the house is not yet decided. 他们是否卖掉这所房子还没有决定。 4) whatever, whoever也可引导主语从句。 Whatever was said here must be kept secret. 这里说的话都应当必威体育官网网址。 Whoever makes mistakes must correct them. 凡犯了错误的人都必须改正。 注意: 上述例句中的主语从句都是放在句首, 但有时为了使句子结构平衡, 避免 “头重脚轻”, 常用 it 作形式主语, 而把从句放在后面。 例如: 　　It is a pity that she has made such a mistake. 她犯了这样一个错误, 真是遗憾。 这样就构成了下面一些常用句型: 1) It is + adj. / n. +从句 　 It is a pity/shame that... 遗憾的是…… 　 It is possible that... 很可能…… 　 It is unlikely that... 不可能…… 2) It +不及物动词+从句 　 It seems/appears that... 似乎…… 　 It happened that... 碰巧…… 　3) It + be +过去分词+从句 　　It