初中英语人教版（2024）八年级下册（2024）Section A评课ppt课件

这是一份初中英语人教版（2024）八年级下册（2024）Section A评课ppt课件，共14页。PPT课件主要包含了新课引入，新课讲解，现在完成时二，归纳小结，强化训练，Since，for ，since，ago， since等内容，欢迎下载使用。
What tense are these sentences in?
He has cllected stamps since 2020.He has given away ld bks t pr kids since he was ten years ld.I have helped the elderly in the cmmunity fr tw years.
Present Perfect Tense.
1. 核心表示过去已经开始，持续到现在的动作或状态。I have learned t play the guitar fr eight years. 我学习弹吉他已经有八年了。My parents have been teachers since 2008. 我的父母自从 2008 年以来就一直是老师。
2. 用法常与“fr + 一段时间” 或“since +过去某个时间点 / 从句 (从句用一般过去时)”连用。(1) 此用法中，谓语动词必须用延续性动词 (否定句除外)。I’ve had the bk fr three years. 这本书我买了3年了。I haven’t seen him fr a lng time. 我很长时间没见他了。
(2) 对fr和since引导的时间状语提问用hw lng。She has studied English fr 5 years. 她学英语已经五年了。→ Hw lng has she studied English? 她学英语多久了？They have lived in this twn since 2020. 自2020年以来，他们一直住在这个镇上。→ Hw lng have they lived in this twn? 他们在这个镇上住了多久了？
3. 非延续性动词与延续性动词之间的转换现在完成时表持续时，短暂性动词不能和 fr / since 连用，需转换为延续性动词。buy → have：I have had this bk fr 2 weeks. 这本书我已经买了两个星期了。leave → be away：He has been away fr 3 days. 他已经离开三天了。
brrw→keep; buy→have; put n→wear; get t knw→knw; begin / start→be n; g ut→be ut; get t / arrive in / reach→be in; die→be dead; leave→be away; g t schl→be in schl; jin→be in / be a member f; clse→be clsed; make friends→be friends; fall asleep→be asleep; marry→be married
一 、用 fr 或 since 填 空 1. Tm’s uncle has been ill __________ tw years. 2. __________ 2012, Dad has wrked in this cmpany.3. —Hw lng has yur sister taught in this cllege? — __________ fur years ag.4. Fred has knwn Betty __________ he was five years ld.5. Tny has played cmputer games __________ tw hurs.
二、同义句转换1. Michael has been here fr five years.Michael __________ __________ five years __________.2. I bught this cmputer last year.I __________ __________ this cmputer __________ last year. 3. Mr Brwn left Beijing tw weeks ag. Mr Brwn __________ __________ __________ __________ Beijing fr tw weeks.
came here
have had
has been away frm
三、完成句子1. She has kept the little dg since she fund it in the street. (对划线部分提问)__________ __________ has she kept the little dg?2. Mike isn’t at hme nw. He went t the cuntryside. (合并为一个简单句)Mike __________ __________ t the cuntryside.3. They studied English last week. (用since tw weeks ag代替last week改写句子)They __________ __________ English since tw weeks ag.
Hw lng
has gne
have studied
四、单项填空( ) 1. Since last year, ur schl ________ free breakfasts t students in need. A. fferedB. has fferedC. was fferingD. will ffer( ) 2. Helen ________ this pian since 10 years ag. It is still like a new ne nw. A. hadB. has hadC. wuld haveD. was having( ) 3. Since I was brn, my family ________ in the same flat. A. liveB. will liveC. are livingD. have lived
( ) 4. Mr Green ________ China fr five years.A. has been tB. has gne tC. has been inD. has cme t( ) 5. Hurry up! The mvie ________ fr ten minutes.A. has begunB. beganC. has been nD. will begin( ) 6. —Hw lng have yu been learning t play the guitar, Mike?—Fr tw years. I’ve kept practicing ________ I was 12 years ld.A. sinceB. whenC. whileD. because