人教版（2024）八年级下册（2024）Section A图片ppt课件

这是一份人教版（2024）八年级下册（2024）Section A图片ppt课件，共36页。PPT课件主要包含了时间点，时间段，has taught，for ，have been ，since ，Since ，have made，have ，met等内容，欢迎下载使用。
Learning Objectives
A: Have yu given directins t the strangers? B: Yes, I have. I have given directins t : N, I haven’t. I haven’t given directins t ...
give directins
guide visitrs
plant trees
visit the elderly
Lk at the pictures and say ut the phrases.
Read the sentences. Hw are fr and since used differently?
What’s the difference between “fr” and “since”? (e.g., fr+ time perid, since+ time pint)Can yu make a sentence with “fr”? (e.g., I have studied English fr 3 years.)Can yu make a sentence with “since”? (e.g., I have lived here since 2020.)
Lk at the table abve and answer the fllwing questins.
But ne f my friends has vlunteered here fr a lng time.
She has been a vlunteer at a nursing hme since last August.
since后面接时间点，强调动作或状态的开始时间。
fr后面接时间段，强调动作或状态的持续时间。
如何区分时间段和时间点呢？
试着说说哪些是时间点，哪些是时间段吧！
5:30 five years three minutes 2015 May 5 tw mnths
时间点指的是具体的时间，比如1点、4月7日、2026年12月；时间段指的是一段时间内，比如说三点到四点，中间这一个小时就是一段时间。
Watch the vide t help yu have a better understanding f the differences.
Fill in the blanks with fr r since.
1．I have wned the ty bear ________ mre than six years. 2．He has wrked as a pliceman ________ ten years. 3．They have wrked here ________ June.4．She has studied English ________ she was five.5．We’ve knwn each ther ________ we were primary schl students.
现在完成时表示动作或状态从过去某时开始，一直延续至今，还可能继续下去。这种用法称为“未完成用法”。此时常与fr 或 since 引导的时间状语（从句）连用。
1. 现在完成时的含义
2. 现在完成时的“未完成”用法
3．延续性动词与非延续性动词（1）含义： 延续性动词表示能够延续的动作，这种动作可以延续下去或产生 持久影响。 非延续性动词也叫终止性动词、瞬间动词等，表示不能延续的动作，这种动作发生后即刻停止。
3．延续性动词与非延续性动词（2）用法： ①常见的延续性动词有 learn、wrk、live、knw、walk、watch、sleep、stay、wait、keep 等。 延续性动词可以与表示一段时间的状语连用，如 hw lng、fr+时间段、since+过去的时间点、since 引导的时间状语从句（一般过去时）、since+一段时间+ag 等。
3．延续性动词与非延续性动词（2）用法： ②常见的非延续性动词有 pen、clse、die、begin、cme、g、brrw、lend、buy、mve 等，表示某个动作的结果还存在，但不能与表示一段时间的状语连用。有些非延续性动词可以用延续性动词替换。 ③在否定句中，非延续性动词可以与表示一段时间的状语连用。 e.g. I haven’t heard frm my friend fr three weeks. 我已经有三个星期没有收到我朋友的来信了。
（3）非延续性动词转换为延续性动词的方法： ①将非延续性动词转化为“be+形容词或副词”，这样才能和时间段连用： begin/start →be n（开始）g there →be there （去那里） cme back →be back（回来） cme here →be here （来这里） pen →be pen（开业） clse →be clsed （关门） die →be dead（死） marry →be married （结婚）
3．延续性动词与非延续性动词
finish →be ver （结束） g t bed →be in bed （上床睡觉） leave →be away （离开） return →be back （回来） get ut →be ut （出去） fall asleep →be asleep （入睡） lse →be lst （丢失） fall ill →be ill （生病） get/arrive/reach →be in/at （到达） jin/becme →be in/be a member f （参加，加入）
（3）非延续性动词转换为延续性动词的方法：
②有的非延续性动词可以转化为意思相同的延续性动词：
3．延续性动词与非延续性动词（3）非延续性动词转换为延续性动词的方法：
非延续性动词可以转换为延续性动词。
动词转换例句精讲（正反对比）1.✅ I have been in the club fr 2 years.❌ I have jined the club fr 2 years.（jin是短暂性动词）2.✅ The film has been n since 7:00.❌ The film has started since 7:00.（start是短暂性动词）3.✅ He has been away frm hme fr a week.❌ He has left hme fr a week.（leave是短暂性动词）4.✅ I have kept the bk fr three days.❌ I have brrwed the bk fr three days.（brrw是短暂性动词）
动词转换小试牛刀改正下列错误句子，替换为延续性动词1.He has bught this bike fr tw has cme t this schl since have jined the army fr ne year.
He has had this bike fr tw years.
She has been in this schl since 2021.
They have been in the army fr ne year.
Cmplete the sentences with the crrect frms f the verbs in brackets and fr r since.
1. This cllege student enjys vlunteering fr the army. She_____________(teach) English t the sldiers _____ three years.2. I__________(be) a member f the Red Crss fr six years. I have made a lt f friends ________I jined the rganizatin.
3. Mr Wu has taught in a primary schl as a vlunteer ________ tw years nw. _________he started wrking there, he __________(help) many students.4. The rganizatin___________(train) ver 6,000 vlunteers __________it began t ffer classes three years ag.
has helped
has trained
Cmplete the passage with the crrect frms f the verbs in brackets.
I lve being a vlunteer! I____________(wrk) with a sprts rganizatin fr almst three years nw. Since I started, I ____________ (help) ut at ver ten different sprts events. I ____________(make) many new friends and I ________ even ________(meet) many famus athletes. Fr example, I ______(meet) tw natinal ftball players frm Argentina last mnth.
have helped
They were at a stadium fr a charity match. The stadium _______(be) s big that they_______ (get) lst. I gave them directins and they________(smile)and____________(thank) me warmly.I am prud t be a vlunteer.
Wrk in grups. Interview yur grupmates using the questins belw. Share the answers with the class.
In ur grup, Maria has lived in this neighbrhd fr nly ne year, but she knws it very well. Tm has lived in the neighbrhd since he was a baby. And he has had his favrite ty, a sft teddy bear fr 9 years. He received it n his fifth birthday. Tm has a gd friend called Jimmy and they have been gd friends fr six
1、 Mr Wu has taught in a primary schl as a vlunteer fr tw years nw.作为志愿者吴先生现在已经在一所小学任教两年了。
primary adj. 小学教育的；首要的
adj.小学教育的，用于名词前作定语。
primary schl小学
primary educatin小学教育
Fr middle and primary schl students, learning t ck has becme a must. 对于中小学生来说，学习烹饪已经成为必须要做的事。
2、 Since I started, I have helped ut at ver ten different sprts events. 自我开始工作以来，我已经协助了十多场不同的体育赛事。
help ut 意为“分担工作；帮忙做”。
help (sb) ut with sth 帮助某人处理某事
Can yu help me ut with the heavy bxes?你能帮我搬一下这些重箱子吗？
I’ll help ut with the party preparatins.我会帮忙准备派对。
3、 They were at a stadium fr a charity match.他们正在体育场参加一场慈善比赛。
表示 “慈善（行为 / 事业）”，为不可数
d charity（做慈善） charity wrk（慈善工作）ut f charity（出于慈善）
All the mney raised will be dnated t charity.所有筹集的资金将捐给慈善事业。
4、 I gave them directins and they smiled and thanked me warmly. 我为他们指了路，他们微笑并热情地感谢了我。
warmly adv. 热情地；温暖地
由“warm (adj. 温暖的) + -ly(副词后缀)”构成。
The villagers welcmed us warmly. 村民们热情地迎接我们。
Make sure that the children are dressed warmly. 一定要让孩子们穿得暖和。
用括号内所给内容的适当形式填空。1. The film ___________ (be) ppular with the public since it ___________ (cme) ut.2. Tny ___________ (have) the bike fr tw years. His father ___________ (buy) it fr his ninth birthday.3. Linda ___________ (brrw) the bk frm the library and she ___________ (keep) it fr three days.
4. We ___________ (knw) each ther since we were in middle schl, and we’re still best friends.5. Lucy ___________ (nt see) her aunt fr mnths. She ___________ (miss) her s much and wants t visit her this weekend.
hasn’t seen