(
课件网) Unit 5 Going on an exchange trip 主题范畴： 人与社会 主题群： 社会服务与人际沟通 子主题： 跨文化沟通与交流，语言与文化 Key question What is it like to experience a new culture master the grammar rules of the present perfect; use the present perfect with already, yet, ever, never, since and for correctly. Learning objectives 学习目标 At the end of the class, I’ll be able to: Pay attention to the circled words. the present perfect tense: have/has + been/V-ed Lead-in Eric has been in Beijing for a week. He has written an email to tell his mother about his exchange experience. Read the email and pay attention to the words in bold. We use the present perfect to talk about past events with a connection to the present. We form the present perfect with _____ of the main verb. have / has + the past participle While-learning I have seen the film. I do not want to see it again. 这部电影我已经看过了，不想再看了。 一、现在完成时的用法 1. 在以前某个时间已经发生的行为或曾经做过的事 情对目前有某种影响； 2. 到目前为止已经完成的事情。 My aunt has travelled all over the world. 我姑姑已经周游了世界。 A The present perfect tense 二、现在完成时的结构 1.肯定句： 1) I have learnt some useful Chinese phrases at a local school with my British classmates. 2) Our teacher has told us we will do some Chinese painting and tai chi next week. 注意：句式中的have或has是助动词，has用于第三人称单数，其他人称用have。 have/has + V-ed 2.否定句： 1) I haven’t tried tai chi before, so I am excited! 2) By the way, Wei hasn’t been to the UK. haven’t (hasn’t)＋V-ed 3.一般疑问句： 回答： Yes, … have (has). No, … haven’t (hasn’t). 1) — Have I/you/we/they made a lot of new friends — Yes, you/I/we/they have./No, you/I/we/they have not. 2) — Has he/she/it made a lot of new friends — Yes, he/she/it has./No, he/she/it has not. Have/Has + 主语 + V-ed + … 1. 一般直接在词尾加上ed。如： look—looked—looked 2. 以不发音的e结尾的动词，直接加d。如： move—moved—moved 3. 以y结尾，y前面是辅音字母的动词，变y为i，再加ed。 如： carry—carried—carried 4. 以一个辅音字母结尾的重读闭音节动词，双写词尾 辅音字母，再加-ed。如： stop—stopped—stopped 动词的过去分词的变化规则 cut cut cut let let let put put put read read read A-A-A型 (动词原形、过去式、过去分词都同形) 有一部分动词-ed形式的变化是不规则的，没有规律，需要记忆。比如： do did done be was/were been go went gone see saw seen A-B-C型 (动词原形、过去式、过去分词都不同形) have had had make made made spend spent spent tell told told A-B-B型 (动词过去式、过去分词同形) B The present perfect tense with already, yet, ever, never, since and for Read the passage below and pay attention to the words in bold. We use _____ with a point in time. We use _____ with a period of time. We can use the adverbs already, ever and never _____ have / has and _____ the main verb. We often use yet at the end of a _____ or a _____ sentence. since for after before question negative She has already tried a ... ...
