人教版八年级英语上册第十单元IF引导的条件状语从句课件

1、状语从句If 引导的条件状语从句什么是状语？He speaks English very well. You are very beautiful.（动词）（形容词）（程度副词）主语谓语宾语状语 用来修饰动词，形容词，副词以及全句的句子成分，叫做状语。用作状语的通常是副词，介词短语，不定式和从句等。状语从句 分类1时间状语从句9结果状语从句6让步状语从句8方式状语从句7比较状语从句2地点状语从句3原因状语从句4条件状语从句5目的状语从句位置：从句可放在主句之前或之后，但是放在主句之前须有逗号隔开eg:如果我有足够的钱，我就去环游世界。If 引导条件状语从句 定义：If “如果, 假如” 它引导

2、的句子表示某事发生所需的条件，即“在条件下，某事才能发生”，在句子中充当状语，因此称之为条件状语从句。（ If 引导的条件状语从句表示假如有从句的动作发生，就会有主句动作的发生 ）If I have enough money, I will travel around the world .=I will travel around the world if I have enough money.If条件句：条件句用于陈述语气，表示假设的情况可能发生，其中 if 是“如果”的意思。主句一般将来时 ，从句用一般现在时。 构成条件从句主句时态If一般现在时主语shall/will+动词原形例句I

3、f he comes,he will take us to the zoo.1. 如果主句是一般将来时，从句则用一般现在时。 If it rains（从句）， I will stay at home. Ill go with you if you dont want to go alone（从句）. 2.如果主句含有must, may, can 等情态动词，从句也要用一般现在时。 If you drive too fast, you may have an accident. You must stop if the traffic is red. If you finish the home

4、work， you can go home 如果你作业做完了就可以回家了。 If you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包。If 引导的条件状语从句的基本用法:主 句从 句一般将来时一般现在时祈使句一般现在时含情态动词一般现在时 1.If he_ (not, do it ), I_(do) it.2.If you _ (be) late for school ,my teacher _(be) angry.arewill be3 If she_ (win) the prize ,we _(be)

5、 happy.winswill be4.If I _ (not, eat )so much ,I _(get) thinner.5.If you _(tell) them, they _ (not, believe) you.dont eatwill gettellwont believe6 I _(stay) at home,If it _( rain).7.If it _( not, rain) ,I _( go) out.8. we _(play) football, If it is _(sun) .9.If she _(become) a star ,her parents _ (n

6、ot,send) her away 10.He _(watch) TV ,if he _(be) free.will stayrainsdoesnt rain will gowill playsunnybecomeswont sendwill watchisdoesnt dowill doI _(record) the CD for you tomorrow.Does she often _(lend) money to her brother?The snake _(not appear) if you make noise.In the final exam, I _(get) good

7、marks. will record lend wont appear will get 2.Youmay _ (pass)theexamifyou_ (study)hard. rainswill stay passstudy 3. If you want to record, _(press) the red light.press1.If It_ (rain) tomorrow, I _(stay) at home.Fill in the blankets with the proper form 用括号内所给词的正确形式填空1.If the rain _(stop) tonight, w

8、e will go to the cinema.2.Ill buy a computer if I _(have) enough money.3.You _(not get) nervous if you _(do ) enough exercise.4.If she _ (be) kind to me , I _(not argue) with her.5.I want to know if he _(come) tomorrow, if he _(come), I _(give) the massage to him. stopshave wont getdo iswont argue will come comes will giveIf Im ill,_. I will see a