Unit8 Section A Grammar 2026学年八年级英语下册同步实用课件（新教材人教版）

这是一份初中英语Section A集体备课ppt课件，共30页。PPT课件主要包含了for，since等内容，欢迎下载使用。
Read the sentences. Hw are fr and since used differently?
2. 表示从过去开始并持续到现在的动作或状态。
1. 表示过去发生或已经完成的动作对现在造成的影响或结果。
have / has +过分
现在完成时时间状语 / 标志词：
以前 最近地到目前为止 两次从不 刚刚曾经 已经仍然，还 在过去的几年里这一周以来 多年来fr since
in the last / past few years
during this week
ver these years
Learn the usage f the past cntinuus tense.
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后面接时间点或从句，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。
Learn the usage f time pint vs time perid.
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。
Hw lng have yu been classmates?
1. We have been classmates _________ 2024.
2. We have been classmates _________ almst tw years.
3. We have been classmates _________ tw years ag.
4. We have been classmates _________ we jined Jindngfang Middle Schl.
5. We have studied in the classrm ________ a lng time.
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.
Learn abut the structure f the present perfect tense.
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 trained
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. 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 bea vlunteer.
Cmplete the passage with the crrect frms f the verbs in brackets.
have helped
（Tips：首先判断该句是现在完成时还是一般过去时，如何判断）
I _______________ (vlunteer) at this hspital since 2021.She ________ (start) vlunteering tw years ag.They __________ (be) friends fr ten years.He ________ (jin) the vlunteer grup last mnth.We _____________ (clean) up the beach since 8 a.m. this mrning.My sister ____________ (nt / eat) anything since breakfast.The ld man __________ (live) in this village fr 60 years.I _____ (see) that mvie when I was ten.They _____________ (cllect) ver 1,000 bks s far.She __________ (be) a vlunteer at the museum since she graduated.
判断并填写正确的动词形式（现在完成时或一般过去时）
have vlunteered
have cleaned
hasn't eaten
have cllected
sb have / has been t+sp
sb have / has gne t +sp
sb have / has been in +sp+时间段
某人去过某地人已经回来
某人去了某地人现在还在那里，没回来
某人在某地待了多久强调持续状态
ever, never, twice, three times, befre
必须加时段（fr/since）
1. Srry, Mr. Wang isn't in the ffice right nw. He ____________ the airprt t pick up a freign guest.2. We ____________ this beautiful castal city fr nearly five years, and we really lve living here.3. My grandparents ____________ Munt Huang twice, and they always talk abut the beautiful sunrise there.4. He ____________ Canada since he graduated frm university in 2019.5. _________ yu ever __________ the new science museum that pened last mnth?6. The twins ____________ their uncle's farm in the cuntryside. They wn't cme back until Sunday evening.
have been in
have been t
has been in
Have been t
1. 延续性动词 = 能一直做、能 "扛时间" 的动作就是你可以拿着秒表计时，这个动作能持续几秒、几分钟、几小时甚至几年。✅ 常见例子：睡觉（sleep）：能睡 8 小时学习（study）：能学一下午住（live）：能住 10 年工作（wrk）：能工作一整天等（wait）：能等半小时拥有（have）：能拥有一本书很多年
2. 非延续性动词 = 一瞬间就完、"扛不住时间" 的动作 也叫瞬间动词，动作从开始到结束只有零点几秒，没有持续过程。✅ 常见例子：开门（pen）：钥匙一转就开了到达（arrive）：脚一落地就到了买（buy）：付钱拿东西就结束了死（die）：人断气就死了借（brrw）：接过东西就借完了开始（begin）：上课铃一响就开始了
We left hme fur days ag.
We have left hme fr fur days.
❌left是短暂性动词
✅ We have been away frm hme fr fur days.
非延续性动词绝对不能和 fr/since（表持续多久）连用
❌ 错误：I have bught the bk fr 3 days. （"买" 这个动作不可能持续 3 天，难道你付了 3 天钱？）
✅ 正确：I have had the bk fr 3 days. （把瞬间的 "买" 换成能持续的 "拥有"）
have / has kept
have / has had
have / has been here
have / has been there
be away(frm)
have / has been away(frm)
have / has been
have / has wrn
have / has lived in
begin / start
have / has been n
have / has been ut
get t / reach / arrive
be in / at
have / has been in / at
have / has been dead
finish / end
have / has been ver
be in / be a member f
have / has been in / have / has been a member f
1. I ___________ (buy) that interesting science fictin bk written by Liu Cixin fr 3 days.2. She ___________ (brrw) my new blue muntain bike with a cmfrtable seat since last Mnday.3. His kind grandfather wh lved planting flwers in the backyard ___________ (die) fr 5 years.4. They ___________ (arrive)the beautiful capital city Beijing with many ancient buildings fr a mnth.5. We ___________ (leave) frm ur small peaceful hmetwn with green muntains and clear rivers since 2020.6. They ___________ (mary) t each ther and lived in a warm huse with a lvely garden fr 10 years.7. The new cffee shp near ur schl with delicius cakes and milk tea fr ___________ (pen) hurs.8. The cute baby girl with big eyes and lng eyelashes fr___________ (fall asleep) an hur.
has been dead
have been away
have been married
has been pen
has been asleep
Learn the cntinuus verbs and discntinuus verbs
延续性动词与非延续性动词
Learn the usage f cntinuus verbs and discntinuus verbs.
at a nursing hme
stay active
care fr/lk after/ take care f
vlunteer fr the army
primary schl
warmly thank me
a charity match
yu been t ur animal shelter
lng has he wrked as a vlunteer
taught in a primary schl
fr tw years
have been a member
s big that they gt lst
She has wrked at the nursing hme ______ tw mnths.He has been a vlunteer ______ he was in primary schl.They have cllected 500 bttles ______ last Friday.I haven’t seen my friend ______ a lng time.Our club has helped the elderly ______ 2021.The by has had this ty ______ three years.We have planted ver 200 trees ______ the prject started.She has knwn her best friend ______ she was five.The vlunteers have been busy ______ several hurs.I have wanted t be a vlunteer ______ I watched that mvie.
Fill in the blanks by using “fr” r “since”.
1. since /sɪns/ prep. & cnj. 自从；自……以来
用法：后接时间点或过去时间状语从句，主句用现在完成时。常见搭配：since 2019, since last week, since I was a child辨析：since + 时间点；fr + 时间段。
She has been a vlunteer since last August.He has wrked here since he left schl.
填空：I have been a teacher ______ 2015.翻译：自从他加入这个组织以来，他帮助了许多人。
He has helped many peple since he jined this rganizatin.
2. charity /ˈtʃærəti/ n. 慈善机构（或组织）；慈善事业
固定搭配：charity match（慈善比赛），dnate t charity（向慈善机构捐款）词性转换：形容词 charitable（慈善的；仁慈的）用法：可数或不可数名词。
They were at a stadium fr a charity match.He ften gives mney t charity.
填空：The cncert raised mney fr a lcal ______.翻译：这家慈善机构帮助无家可归的人。
This charity helps hmeless peple.
3. warmly /ˈwɔːmli/ adv. 热情地；温暖地
词性转换：形容词 warm（温暖的；热情的）固定搭配：thank warmly（热情感谢），greet warmly（热情问候）用法：副词修饰动词。
They smiled and thanked me warmly.She warmly welcmed the guests.
填空：The ld man smiled ______ at the children.翻译：志愿者热情地帮助了游客。
The vlunteers helped the turists warmly.
4. help ut v短语 分担工作；帮忙做
用法：动词短语，可带宾语 help sb. ut。固定搭配：help ut with smething（帮忙做某事）同义表达：lend a hand
I helped ut at ten different sprts events.She helped him ut with his hmewrk.
填空：Can yu ____________ with the clean-up after the match?翻译：我经常在养老院帮忙。
I ften help ut at the nursing hme.
My uncle has been a (1) ______ in the (2) ______ fr five years. He als des vlunteer wrk. He has taught in a (3) ______ schl (4) ______ tw years. He has helped ut at a (5) ______ since last year. He (6) __________ at the charity every weekend. The children he teaches always smile (7) ______ at him. He (8) _________ a vlunteer (9) ______ he was yung. I think he is a great sldier because he always tries t help ut (10) ______.
1. She has been a vlunteer at a nursing hme since last August.——自从去年八月起，她就一直在养老院当志愿者。2. I have made many new friends and I have even met many famus athletes.——我交了很多新朋友，甚至还见过许多著名运动员。3. They smiled and thanked me warmly.——他们微笑着，热情地感谢了我。4. 我在这家慈善机构帮忙已经有三年了。——I have helped ut at this charity fr three years.5. 自从他加入军队以来，他交了许多朋友。——He has made many friends since he jined the army.6. 士兵们热情地欢迎了这些孩子。——The sldiers welcmed the children warmly.