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1、LESSON 110【场景复现】一顿早餐“吃出”三大语法 （2）（本讲 请参考课本 第 117 课 内容）【单词银行】重磅深挖：详解：由 when, while, as 引导的时间状语从句，该如何精准表达：(1) 如果主句里是一个短暂性动作，而从句当中的是一个延续性动作， 则 when, while, as 都可以用：My mum opened the door when/while/as I was singing in the bathroom. I found my son when/while/as he was crying in the classroom.(2) 如果主句和从句里
2、的两个动作是“相伴发生”延续性发生，并且， 主句里的动作延续时长可以“贯穿”从句里所指动作的“整个时段”，则往往首选 while；While she is working, I am writing a letter to my mum. He is having lunch while his wife is watering the garden.但是，如果主句和从句表示的是两个同时进行的动作，且有“一边一 边”的含义，可以选择用 as：Tom eats an ice cream as he waits for Lucy.LESSON 110【场景复现】一顿早餐“吃出”三大语法 （2）(3
3、) 如果从句是一个短暂性的动作，但是主句含有一个持续性的动作， 可用 as / when 但不用 while：I was singing in the bathroom when/as my mum opened the door. My son was crying in the classroom as/when I found him.(4) 如果主句、从句均表示的是两个同时(或几乎同时)发生的短暂性动作，用 as / when：I broke my watch when/as she stopped the car.速记 when; while; as 用法口诀：主短从长，都可以；主长
4、从短，用 when/as；主长从长，首选 while；主短从短，还是 as/when； 一边一边，不用急，as 领衔都搞定。【经典句型】We both tried to get the coins, but it was too late. Tommy had already swallowed them.2LESSON 110【场景复现】一顿早餐“吃出”三大语法 （2）思考：1. 本句中，有几个动词？2. 这几个动词，是否有先后顺序？3. 哪个动词是最先开始？过去完成时：该时态是新概念英语第一册的第七个时态。在一般的过去某“时段” 中，先后发生了两个动作，先发生的动作，对于后续的那个动作或状
5、态造成了“影响”或“后果”，则往往先发生的这个“过去的动作”用过去完成时，而稍后发生的动作用一般过去时。注意：这些时态，都是站在“现在”的视野，回顾“过去时空”所发生的事情。因此，常见语法书会称该时态为“过去的过去”。常见结构：助动词 had + 动词过去分词请注意如下例句：肯定句：I had bought your book. But I sold it yesterday.一般疑问句：Had you bought my book?肯定回答：Yes, I had.否定回答：No, I hadnt.否定句：I didnt read your book. Because I hadnt foun
6、d it in my city.特殊疑问句：What had you bought before you came to Shanghai?LESSON 110【场景复现】一顿早餐“吃出”三大语法 （2）回温“经典句型”：We both tried to get the coins, but it was too late. Tommy had alreadyswallowed them.【文化介绍】在美国、加拿大等国家，骑单车出行都需要佩带安全头盔，而如果骑车人的年纪是不满 18 岁的话，依照法律，他们需要被强制带上头盔骑行。另外，在骑行过程中，如果你要转弯，则需要事先用左手做手势，方便提醒
7、单车后面的机动车辆和行人。例如，在转弯前，您伸出左臂，用手臂指向您将要转弯的左边或右边。（标准化的动作是：做举手发言状表示右转，向左平伸左臂表示左转）而假如您要停车的话，则是把左臂垂直放下，并把手掌打开。特别需要提醒的是，根据当地法律，任何人都严禁在人行道上骑行单车，如果一旦被警察发现，那张价格不菲的罚单还是会让人心疼的。【上讲作业解析】请把下列出现的现在进行时，改写为过去进行时；如遇其他时态，请根据语境进行相应的时态改写。（建议：你可以加上一些表示过去的时间状语，例如：yesterday, last night, last week 等）LESSON 110【场景复现】一顿早餐“吃出”三大语
8、法 （2）1. Sorry, Mum. I am listening to the music. I dont know you are sleeping.Sorry, Mum. I was listening to the music. I didnt know you were sleeping last night.2. My cat is running after the dog on the grass.My cat was running after the dog on the grass this morning.3. I am sure that your mum is l
9、ooking for you.I was sure that your mum was looking for you last week.4. Where are you singing? That is too noisy.Where were you singing yesterday? That was too noisy.5. Is he driving the car? What a bad driver he is!Was he driving the car the day before yesterday? What a bad driver he was!6. What a
10、re you writing? You look very sad.What were you writing yesterday afternoon? You looked very sad.7. You are making the notes, arent you?You were making the notes, werent you?8. Why are you reading that book? You dont finish your work.Why were you reading that book last night? You didnt finish your w
11、ork.LESSON 110【场景复现】一顿早餐“吃出”三大语法 （2）【本讲作业】请把下列现在完成时的句子转变成过去完成时（如遇其他时态，请根据语境做转换）：1. I have already finished my work. How about you?2. Have you found your PC? You have used it for 5 years.3. You havent been to Beijing, have you?4. I have had my meal before I come here.5. He says that he has already read this terrible book.6. How have you made this meal? It is so yummy.7. What have you heard in the office? Nobody tells me.8. I have paid a deposit of 1,000 yuan. Do you remember it?