
新概念英语第一册 Lesson 104 知识点讲解 讲义.docx
6页LESSON 104【阶段总结】第二阶段课程知识点复习 (4)(本阶段复习巩固 课程第 51 讲至 100 讲 核心内容)【词法复习】之二情态动词之五:must1. 该词表示“应该”、“必须”,有一种命令、要求、强烈建议、有责任义务去做...等语气Her son is ill. She must leave at 10 p.m.Tom, you were late this morning. You must come early tomorrow.2. 该词的否定形式“mustn’t”= must not,表示“不应该”、“严禁”的强硬语气You mustn’t waste my time.-Must I finish my work today?-Yes, you must. The boss is waiting.-No, you needn’t.(注意否定的回答)延伸:-May I borrow your telephone?-Yes, you may. 或 Sure. 或 Of course you may/can.LESSON 104【阶段总结】第二阶段课程知识点复习 (4)-No, you may not.(语气较为冷淡。
No, you can’t.(这种回答基本上就是“友尽”3. must 虽然只有一个写法,但是既可以用于现在时,也可以用于过去时提醒,如果是“过去时”里,must 常出现在间接引语里He said that we must go home.It was too late, we must go home.4. 口语中,must 还可以表示说话人对于“情况”、“事物”的判定,往往是“肯定”、“准是”这样的语气It is 10 a.m. Your son must be in Canada now. You must know Tom, right?之六:need这个情态动词比较特别,它既可以做实意动词,表示“需要”,也可以做情态动词,表示“必须的语气”请注意如下的句子:做实意动词:need - need + sth. - need to do sth. I am thirsty. I need more water.I am not thirsty. I don’t need much water.LESSON 104【阶段总结】第二阶段课程知识点复习 (4)I am hungry. I need to eat an apple.I am not hungry. I don’t need to eat an apple.做情态动词:need - need do sth. & needn’t do sth.- Mum is coming home. I need sweep the floor at once.- Don’t worry. The plane is late. You needn’t sweep it now.- That’s good. Need I sweep it today?- Yes, you need.看完了“情态动词”复习后,我们再来复习有“代词”兼“引导词”双 重角色的 it。
1. 在口语中,最常见的是用 it 来指代说话人之前提到的“事、物”(当然,也可以指说话人双方都知道的将要发生的某事);有时,it 也可以模糊地没有特别指出是具体的哪个特定的事物You will meet Li Yifeng. It is wonderful! I love this story. It happened in 1919.You are going to try Thai food. It will be great.2. 作为代词,it 可以指除了人类之外的其他一切事物,没有性别之分LESSON 104【阶段总结】第二阶段课程知识点复习 (4)Darling, where is the dog? I can’t find it. It is in the garden.3. 作为代词,it 做主语可以指代时间、距离、自然现象等What time is it now? It is 8:00 p.m.It is a long way to the park on foot.It is a great day for a walk in the country. It is winter now and it is snowing.4. 作为引导词,it 可以作为“形式主语”。
当一个句子的主语比较长, 例如,动词不定式,从句等,为了避免“头重脚轻”,往往会把这个“长主语”放在谓语动词(含系动词)的后面,而把 It 扮演成“带班主语”(只有所谓“主语”之名,但是没有主语的“实际内容”),放在句首因而,这个句子真正的主语依然是在谓语动词(含系动词)后“躲着的” 类似“不定式”、“从句”这样的“大咖”It is bad to drink that stale milk. 本句如果“按中文语序”写: To drink that stale milk is bad.主语LESSON 104【阶段总结】第二阶段课程知识点复习 (4)It is hard for me to tell you the truth. 尝试“还原”: To tell you the truth is hard for me.主语It is a pity that you can’t drink milk.主语从句尝试“还原”: You can’t drink milk is a pity. 主语从句请尝试翻译:很明显,她是你母亲。
It is clear that she is your mum.你的弟弟在北京大学读书,太好了!It is so great that your brother is studying in Peking University.【本讲作业】请继续复习本套课程第 51 讲至第 100 讲的内容,重点复习“核心语法”、时态以及“经典句型”中的固定结构,并通过本课程内的大量例句和实操场景进行综合复习切忌只是单独背诵单词,而不把词汇以及知识点放入到“某个场景”或“情景”中语言的学习需要“立体感”,这也是杨芮老师从 2003 年就开始研发的“立体英语学习法”要领之一,我们一起努力。












