Unit 5 Nature's Temper Section A Grammar Focus 含交互动画（课件）英语新教材人教版八年级下册

这是一份初中英语Section A课前预习ppt课件，共39页。PPT课件主要包含了CONTENTS，学习目标， Lead-in，reading，when，whenwhile，while，was ，were ，While等内容，欢迎下载使用。
Presentatin
Language pints
通过本节课学习，学生能够：
Watch a vide
What were peple ding at the time f rainstrm?
Lk at the pictures and answer.
What was she ding at the time f rainstrm?
She was at hme ____________________.
ding her hmewrk
What was he ding at the time f rainstrm?
He was _______ at the library after schl.
He was ____________ frm the supermarket.
walking hme
She was ________________ after wrk.
waiting fr the bus
02 Presentatin
Read the sentences. Underline the verbs which shw an nging actin in the past.
1. 概念：表示过去某一时刻或某段时间内正进行的动作。2. 构成：was/were + 动词现在分词3. 用法： ①：表示某一时刻正进行的行为，与特定的过去时间状语连用，聚焦具体时间点，常见的时间有：at 8 last night, at this time, at that time, at that mment 等。e.g. What were yu ding at 10 ’clck yesterday mrning?②：表示动作在一段时间内持续进行，未完成；常用时间标志：frm 8 t 10 yesterday mrning；也可搭配while引导的时间状语从句e.g. They were waiting fr yu frm 8 t 10 yesterday mrning.
Learn the usage f the past cntinuus tense.
Learn abut the structure f the past cntinuus tense.
（1）肯定句：主语 + was/were + v.-ing▶ He was reading a bk at 9 last night. 他昨晚上九点正在看书。
（2）否定句：主语 + was/were + nt + v.-ing▶ They were nt playing ftball yesterday afternn. 他们昨天下午并没有在打球。
（3）一般疑问句：Was/Were + 主语 + v.-ing？▶ Were yu watching TV at this time last night? 你昨晚上这个时候在看电视吗？
（4）特殊疑问句：疑问词 + was/were + 主语 + v.-ing？▶ What was she ding when the bell rang?。
Learn abut the present participle change rules.
1.一般情况直接加-ing：play→playing, read→reading2.以不发音e结尾，去e加-ing：write→writing, make→making3.重读闭音节（辅+元+辅），双写尾字母加-ing：run→running, sit→sitting4.以ie结尾，变ie为y加-ing：lie→lying, die→dying
Learn the usage f mdal verbs "culd”.
1.When the fire started（一般过去时，短暂）, we were having dinner（过去进行时，持续） teacher came in（一般过去时，短暂）while we were talking（过去进行时，持续） read a bk yesterday.（读完了，已完成）4.He was reading a bk at 8 yesterday.（8点正在读，未完成）
Read the sentences. Circle the verb frms in the sentences led by "when" and "while".
Learn the time adverbial clauses guided by "when" and "while"
以when和while引导的时间状语从句
1)延续性动词和非延续性动词
Learn the usage f the reflexive prnuns.
①when表示“当……的时候”。从句中既可用延续性动词，又可用非延续性动词，这些动词既可以表示动作，又可表示状态。从句中动作既可和主句的动作同时发生，又可在主句的动作之前或之后发生。如：
②while表示“在……的时候”、“在……期间”。它强调主句的动作与从句的动作同时发生或主句的动作发生在从句的动作过程中。while从句中必须是表示动作或状态的延续性动词。如：
③如果主句的动作在从句的动作过程中发生，从句常用进行时。如:
when/while +
was/were+ V-ing (过去进行时态)
动词过去式 (一般过去时态)
03 Practice
Cmbine each pair f sentences using when r while.
Fill in the blanks with the crrect frms.
1.I ___________ (walk) t schl when I saw a cat in the (be) he _______ (watch) TV at 8 last night?3.They ______________ (nt play) basketball while we were playing _______ yu _______ (d) at this time yesterday?5.The wind _________ (blw) hard while we ___________ (stay) at ____________ (dance) when the music ____________ (have) lunch when the phne they _______ (run) n the playgrund at 4 yesterday afternn?9.He _______________ (nt read) a bk while his sister was snw ______________ (fall) when we went ut.
was walking
Was watching
were nt playing
were ding
were staying
was dancing
were having
Were running
was nt reading
was falling
1.He was watch TV when the drbell rang. ( )2.Were yu play ftball at 4 yesterday afternn? ( )3.While we were walking, we see a beautiful bird. ( )4.When the rain started, we were having a picnic. ( )5.They were nt g t schl while it was snwing. ( )6.What were yu ding at this time last week? ( )
He was watching TV when the drbell rang.
Were yu playing ftball at 4 yesterday afternn?
While we were walking, we saw a beautiful bird.
They were nt ging t schl while it was snwing.
判断句子正误，对的打√，错的打×并改正
Press here t exercise mre.
Cmplete the passage with was, were, when, r while.
When Jenny lked up, thick black cluds were frming in the sky, and the rain _____ beating against their rf. “Quick, this way,” said Dad.The family ran t the safe rm at nce. ______ they were waiting, Jenny’s little sister started t cry. Dad gave her sme chclate and tld her that they _____ hiding frm an angry lin. Sn, she was laughing again.At last, the strm passed. _____ they stepped utside, they fund the sun shining. Peple were asking ne anther if they were safe while sme ______ starting t clear the streets. Jenny smiled. The trnad was scary, but it als brught everyne clser tgether.
04 Prductin
同伴合作或小组合作完成
05 Summary
Unit 5 Nature’s Temper (Sectin A Grammar Fcus)
Past Cntinuus Tense
when vs. while
was/were + v-ing
否定/疑问: was/were nt,
表示过去某个时刻正在进行的动作
表示过去某个时间段正在进行的动作
when + 短暂动作 (一般过去时)
when + 持续动作 (过去进行时)
while + 持续动作 (过去进行时)
at 8:00 last night, at that time
frm 7 t 9 yesterday
06 Language pints
Let's learn and take ntes.
pwer /ˈpaʊə(r)/ n. 电力供应；能量；力量
固定搭配：pwer cut/utage（停电），electric pwer（电力），pwer statin（发电站），cme int pwer（掌权）词性转换：形容词 pwerful（强大的），副词 pwerfully辨析：pwer 指能力或电力；strength 指体力；frce 指武力或自然力
The strm caused a pwer cut.He has great physical pwer.
填空：After the typhn, the _________ went ut fr hurs.翻译：这台机器由电力驱动。
The machine is driven by electricity.
sundly /ˈsaʊndli/ adv.（睡觉）酣畅地；可靠地；完全彻底地
固定搭配：sleep sundly（睡得很香）词性转换：形容词 sund（健康的；合理的；酣畅的）辨析：sundly 强调睡得沉；deeply 也可表示深，但 sundly 更常用
The baby slept sundly all night.He was sundly defeated in the game.
填空：After a lng day, I slept ______.翻译：尽管有风暴，他还是睡得很沉。
He slept sundly despite the strm.
thick /θɪk/ adj. 厚的；浓密的
固定搭配：thick cluds（厚云），thick fg（浓雾），thick frest（密林）词性转换：名词 thickness（厚度），副词 thickly反义词：thin（薄的）
The bk is very thick.Thick smke filled the rm.
填空：The ______ fg made it hard t see the rad.翻译：他的头发又浓又密。
His hair is thick and dense.
beat /biːt/ v. (beat, beaten) 敲；打 n. 敲击；跳动
固定搭配：beat against/n（敲打），heart beat（心跳），beat the recrd（打破纪录）词性转换：名词 beating（殴打；打）辨析：beat 指连续击打；hit 指一次性打击；strike 更正式
The rain was beating against the windws.His heart was beating fast.
填空：The waves ______ the shre all night.翻译：鼓手有节奏地敲鼓。
The drummer beat the drum rhythmically.
hide /haɪd/ v. (hid, hidden) 躲藏；隐蔽
固定搭配：hide frm（躲避），hide-and-seek（捉迷藏）词性转换：名词 hiding（躲藏），hidden（形容词，隐藏的）辨析：hide 指故意藏起来；cnceal 更正式，指隐藏某物
The children hid behind the dr.She tried t hide her feelings.
填空：During the strm, we ______ in the basement.翻译：太阳被云遮住了。
The sun was hidden by cluds.
07 Exercise
Last night, a terrible (1) ______ hit ur twn. The wind was (2) ______ against the windws, and (3) ______ cluds cvered the sky. I was sleeping (4) ______ when the strm began, but the nise wke (5)______ up. Suddenly, the (6) ______ went ut, and everything was dark. My little sister was scared, s we (7) ______ under the bed. (8) ______ we were hiding, we culd hear the rain punding n the rf. My parents were in the living rm. They (9) ______ trying t calm my baby brther. After the strm passed, we went utside. The streets were cvered (10) ______ branches. I felt lucky that we were safe. That night, I didn't sleep sundly because I kept thinking abut the strm. When I finally fell asleep, it was already mrning.
pwer sundly thick beat hide with while I were strm
1. When Jenny lked up, thick black cluds were frming in the sky. ——当珍妮抬头看时，厚厚的乌云正在天空中形成。2. The rain was beating against the rf while we were hiding in the safe rm. ——当我们躲在安全屋里时，雨正在敲打着屋顶。3. After the strm passed, peple were starting t clear the streets. ——风暴过后，人们开始清理街道。4. 风暴来袭时，我正在睡觉。 ——I was sleeping when the strm hit.5. 他们躲在门后，直到风暴过去。 ——They hid behind the dr until the strm passed.6. 停电了，整个街区一片漆黑。 ——The pwer went ut, and the whle neighburhd was dark.