【最新】外研版八年级英语下册Module 3 Unit3精品课件(共44张PPT)

Are you familiar with these sentences? They are all from this module.
1. I’ve just made a model spaceship. 2. Have it arrived yet? 3. Astronauts have already been to the moon. 4.We have not found life on any other planets yet.
5. But no one ____ has ____ not been ____ (be) to yet . Mars ____ 6. Scientists ____ have ____ not __________ discovered yet (not discover) life on Mars ____.
5. But no one has been to Mars yet. 6. Scientists have not discovered life on Mars yet. 7. I haven’t started yet because I’m not sure how to make it.
have ____ just _____ made (make) a model 1. I ____ spaceship. 2. ____ Have it _______ arrived (arrive) ____? yet 3. Astronauts _____ have ______ already ______ been (be) to the moon. 4. We _____ have ____ not _____ found (not find) life yet . on any other planets ____
常与现在完成时连用的副词： already, just, ever, yet, never 肯定句: already, just, ever 疑问句和否定句: ever, yet, never yet 常置于句末。 already, never, ever, just 一般置于助 动词have/has之后，过去分词之前。
7. I ____ have ____ not ______ started ____ yet (not start) because I’m not sure how to make it. have_____ just _______ received (receive) 8. They ____ a message from one of our spaceships.
表达“刚刚做完某事”、“已经做完 某事”时，使用现在完成时。如: I have just heard the news. 我刚听到消息。 Astronauts have already been to the moon. 宇航员已经去过月球了。 We have just started to explore other planets. 我们才刚刚开始探索其他行星。
A already, just, ever, yet, never)
现在完成时表示该事件是在现在之前 的某一个时间里发生的， 重点在于强调这一动作与 现在的影响 一般过去时只表示过去的某一具体时 间发生的事情
I have just been to London. I went there last month. 我刚去过伦敦，是上个月去的。 I have already finished my homework. I finished it an hour ago. 我已经写完作业了，一个小时之前完成 的。
just ―刚刚”，already ―已经”，两者都用 于肯定句中，一般置于have/has之后。 否定句中则用yet, 表示“还（未）”。如： The scientists have not heard from it yet. 科学家还没有收到它发出的信息。 Man has not discovered any life in space yet. 人类尚未在太空中发现生命。
A: Where have you put my book? I can’t find it. B: I put it on your desk yesterday. 当 A 问对方把自己的书放在何处时， 他在意的是书目前在哪儿，故用现 在完成时。 B的回答着重的是当时的动作，故用 一般过去时。
Module 3
Unit 3
Language in use
Objectives:
1. To practise the use of present perfect tense with just, yet, already
2. To learn the learning strategy of word map
现在完成时如何用呢？
当我们要表达“某人曾经做过某 事”,
―某人已经做了某事”等意思时, 英 语要用“现在完成时”来表达。
现在完成时的结构： has/have + done (动词过去分词)
肯定句 否定句 疑问句
I / We/ You / I /We/You /They Have you/they They have have not done…? done… (haven’t) done… He/She has done… He/She has not (hasn’t) done… Has he/she done…?
8. They have just received a message from one of our spaceships.
1. to test your sense of observation 2. to test your ability of short-term memory 3. to test your ability of inductive method