Unit2 Part Four（课件）-《商务英语》同步教学（北京邮电大学出版社）

Unit 2 Work 目录 CONTENT Starting-up Part One Reading and Critical Thinking Part Three Listening and Speaking Part Two Grammar Part Four Project Part Six Practical Writing Part Five Part Four Grammar Grammar Nominal Clauses 在复合句中起名词作用的从句叫作名词性从句（nominal clauses），包括主语从句、宾语从句、表语从句和同位语从句。 主语从句（Subject Clause）是在句中充当主语的从句。 宾语从句（Object Clause）是在句中充当宾语的从句。 表语从句（Predicative Clause）就是一个句子作为表语，说明主语是什么或者怎么样。 同位语从句（Appositive Clause）对其先行词（一般为抽象名词）做进一步解释，说明先行词的具体内容；两者是等同关系。 Grammar Grammar Grammar 名词性从句的一些特殊用法 1. 在 what 引导的名词性从句中，what 相当于 the things that/which。 2. 当 whether 引导的名词性从句充当介词的宾语时，whether 不能用 if 替代。 3. 关系代词 that 的前面不能加介词，但在 but、except 和 in 后面除外。 4. 在名词性从句中，if 只能引导宾语从句，表示“是否”。特殊情况：如果 if 引导主语从句，该从句不能位于句首，而是用在“It（形式主语）+be+ 名词 / 形容词 / 动词的过去分词 / 不及物动词 +that 从句”的结构中。 5.“that”引导同位语从句时，在从句中不充当成分。 Grammar Exercises I. Complete the following sentences by choosing A, B, C, or D. ( ) 1. You’d better make sure he will come or not. A. how B. whether C. that D. if ( ) 2. I want to know he has told you. A. what B. that C. how D. which ( ) 3. It hasn’t been a secret will be the new manager. A. whoever B. that C. whom D. who B A D Grammar ( ) 4. is clear that she was No. 1 in the speech contest. A. There B. This C. That D. It ( ) 5. —Excuse me. Could you tell me ? —Certainly. Go this way. A. what can I get to the station B. that I can get to which station C. which station can I get to D. how I can get to the station ( ) 6. The question is it is worth visiting. A. what B. as if