牛津译林版九年级英语上册课件：Unit5-Grammarppt.ppt

GrammarUnit 5翻译下列句子 1）We stayed at home because it rained.2）He walked to the company because his bike was broken.3) Since I know very little Japanese, I cant catch what you said.4) As Mingming was not ready, we went without him.5) Since the outbreak of the Ebola in West Africa, many people are afraid to travel to Africa.1. My Chinese teacher is very knowledgeable _ she reads lots of books. A. but B. so C. because D. although2. _ you are unable to answer， perhaps we should ask someone else. A. Because B. Before C. Since D. After3. _ we are both tired, lets just grab a takeaway(叫外卖). A. / B. When C. Because D. As A. Giving reasons with because1. Because 语气最强，表直接原因，回答why的问题。

通常放在主句之后，可单独使用1）We stayed at home because it rained.2）Why didnt he come? Because he was ill.3）My stomach hurts because I have eaten too many apples.4）-Why do you love her? -Because she is kind.5） I do it because I like it. 2. because可引导表语从句等1) It is because youre eating too much.2) Have you ever walked into a room and felt relaxed? It could be because the walls were painted blue.3) It is because he is honest that I like him.4) That is because you cant appreciate music.3. because of 也可表达直接的原因，只不过其后接名词、代词或动名词。

1) He cant come because of his illness. 2) He is here because of you.because习惯上不与so连用汉语习惯上说“因为所以”，但英语习惯上却不能将 so与because 连用：因为下雨，所以我们呆在家里正：Because it was raining, we stayed at home. / It was raining, so we stayed at home.误：Because it was raining, so we stayed at home.because 从句与 because of 短语的转换 Because引导的原因状语从句有时可与because of 短语转换，because of 后加的原因可以为好或坏但最正规的还是becauseHe cant come because he is ill. / He cant come because of his illness. 他因病不能来 I said nothing about it because his wife was there. / I said nothing about it because of his wifes being there. 因为他妻子在那儿，我对此事只字未提。

B. Giving reasons with since and assince侧重主句，意思是“既然；由于；因为”，表示已知的、显然的理由since 比as语气稍强，且比as略微正式，它们引导的从句通常放在主句之前，有时也放在主句之后不表示直接原因Since可用于省略句，而其他连词不行见例2）1.Since everyone is here ,lets start2.Since so ,I have nothing to say.3.Since you are wrong, you should say sorry.as 鉴于主从并重，从句说原因，主句说结果 1. As it is late, I must go .2. As you were not there , I left a message.as和since的用法大体相同，表示附带说明的“双方已知的原因”或者理由不是很重要，但语气更弱，没有since正式，常译为“由于，鉴于”例如： As it is raining, youd better take a taxi. 既然在下雨， 你最好乘出租汽车 As you are tired, you had better rest. 既然累了， 你最好休息一下。

for 由于，表明附加理由（解释或推断），从句不放于句首,语气最弱1.He must be ill, for he is absent today2.It must have rained last night, for the ground is wet.中考链接( ) 1.Tony never spends money on books_ he doesnt like reading. A. but B. because C. though D. until( ) 2._ everyone is here, lets start our meeting. A. Since B. If C. But D. As( )3._the girl is 22, she takes care of her mother and cooks meals every day. A. If B. But C. Though D. AsBAD选择题：（ ）1.Why was he late for school? _ he got up too late. A、Because B、SinceC、AsD、For （ ）2.Is David at school today？No, he is at home _he has a bad cold. A、because B、sinceC、asD、for （ ）3.It rained last night, _ the ground is wet. A. becauseB. sinceC. asD. for （ ）4. _ you are wrong, you should say sorry to him. A. As B. Since C. because D. For小试身手AADBMore exercises1.-Why are you late? -_(因为) I missed the early bus.2._( 因为） illness, my uncle didnt go to work.3._ (由于）the water here is polluted,even animals cannot drink it.4._(既然）you are sick, you should have a good rest at home.BecauseBecause ofSinceAs1. 因为他太忙，所以他没去开会。

he was very busy, he didnt _ the meeting.2. 既然大家都在这儿，咱们就开始讨论这个话题吧 everyone is here, lets _ _ the topic.3. 由于我不擅长唱歌，我就没有参加歌舞表演 I was not good at singing, I didnt take part in the song and dance show.4. 既然Tom病了，他今天就不跟我们去钓鱼了 Tom is ill, he is not going_ with us today.BecauseattendSincestartdiscussingAsSincefishing译句子：I: Choose the best key.1. -Why was he late for school? -_he got up too late. A. Because B. Since C. As D. For2. -Is David at school today? -No, he is at home _he has a bad cold. A. because B. since C. as D. for3. _ everybody knows about it, I dont want to talk any more. A. For B. Even C. Since D. Because4.I like Han Mei_ she is kind and helpful. A. so B. since C. because D. asAACCHomework:1. Do after-school exercises.2. Preview Integrated skills.。