(课件网) 了来害 灾 Unit 7Natural Disasters 主语从句和表语从句 Learning objectives knowledge objectives ability objectives emotional objectives To learn the basic usage of subject clauses and predicative clauses. To choose the appropriate relative words of subject clauses and predicative clauses in the specific context. To cultivate the good habit of using language correctly in daily life. 目录 Grammar Vocabulary CONTENT Homework Warming up 1 2 3 4 Warming up Part 1 Natural Disasters Do you know what the two basic sentences are 主语 谓语动词 系动词 宾语 表语 What can be the sentence elements 主语 谓语动词 系动词 宾语 表语 名词 名词 动词 动词 名词、形容词等 名词性从句 名词性从句 that 代指“某件事” whether/if 代指“是否” what 代指“某个物” which 代指“哪一个” who／whom 代指“某个人” 常见引导词： where 代指“某个地点” when 代指“某个时间” why 代指“某个原因” how 代指“方式” Grammar Part 2 Natural Disasters Grammar 主语从句和表语从句 It is true that these disasters are not actually all that natural. It is known that sandstorms are caused naturally by strong winds. The most important thing is how we can have more people join us. 由that引导的主语从句 由that引导的主语从句 由how引导的表语从句 主语从句 主语从句常用it代替 为了使句子保持平衡，常用先行词it 做形式主语，来代替主语从句，而把主语从句置于句末。 e.g：That he didn’t take part in my wedding is a pity.（主语从句） =It is a pity that he didn’t take part in my wedding 愦憾的是，他没能来参加我的婚礼。 主语从句 常见句型 (1) It is+n.+ 从句 It is a pity/shame that... 遗憾的是…… It is a surprise that... 令人惊奇的是…… It is a fact that… 事实是…… It is common knowledge that… ……是常识 主语从句 常见句型 (2) It is+adj.+ 从句 It’s certain that… ……是肯定的 It is possible that... ……是有可能的 It is unlikely that... ……是不可能的 It is obvious that… ……很明显 It is necessary/important/natural/...that… (should)+do / be done+… 做……是有必要的/ 重要的/ 自然的 主语从句 常见句型 (3) It+ 不及物动词+ 从句 It seems as if… 似乎…… It doesn’t matter that… ……没关系 (4) It is+ 过去分词+ 从句 It is reported that… 据报道…… It is said that… 据说…… It is believed that… 人们相信…… 主语从句 表语从句一般放在主句的谓语动词（系动词）后，常用的系动词有be，seem，remain，sound，look等。 引导表语从句的连接词除了 that，wh- 类连接词，还有 as if/ though，because，as。 e.g. The question is whether it is worth doing. She has remained where I stood yesterday for half an hour. It looks as if it is going to rain. Task16 Read and group. 根据上面的例句对下列句子进行归类。 1) It is said that the first bridge was built more than three centuries ago. 2) The fact is that he couldn’t use the computer. 3) That is why they decided to hold a meeting. 4) It won’t make too much difference whether we have it or not. 5) The problem is which team will be chosen. 6) It doesn’t matter whether you pay cash or by credit card. It’s true that these disasters aren ... ...
