内容正文:
考点16状语从句
考点总结
考点01状语从句在句中作状语,用来修饰主句中的形容词,副词或动词。状语从句分为:时间状语从句、地点状语从句、原因状语从句、结果状语从句、条件状语从句、让步状语从句、比较状语从句、方式状语从句和目的状语从句。
考点02 在时间状语从句和条件状语从句中用一般现在时代替一般将来时;用一般过去时代替过去将来时。
I will help you if you are in trouble.
如果你有麻烦我将帮助你。
When it rains I will take out my raincoat.
当下雨时,我将拿出雨衣。
考点03 引导时间状语从句的连词有: while , when, as soon as, since, ever since, once, until, till, before, after 等。
注意:when 引导从句可表示正在那时那刻。
All the students are laughing when the teacher comes in.
所有的学生都在笑,正在这时老师进来了。
When I miss you , I will visit you.
我想念你时,我会去看你。
考点04 when,while和as的区别:
when,while,as三个词译成中文都是“当……时候”。when既可以指“点时间”也可指“段时间”;while只能指“段时间”,因此while后面只接延续性动词;as意为:“一边……一边……”,强调从句的动作和主句的动作同时发生。
While I am watching TV, my aunt visits my house.
当我看电视时,我阿姨来了我家。
She reads the letter as she walks along the river.
她一边沿着河走,一边读这封信。
考点05 till和until的区别:
till,和until 都表示 “直到……”,until多用于句首。
在肯定句中, 两个词都表示“直到……为止”,主句应用延续性动词;
在否定句中,两个词都表示“直到……才”,主句应用终止性动词。
I didn’t get up until the doorbell rang.
直到电话响起我才起床。
They sit there until the class is over.
他们坐在那里直到下课。
考点06 引导地点状语从句的连词有:where等。
Where there is a will,there is a way.
有志者,事竟成。
考点07引导原因状语从句的连词有:because,as,since,now that (既然),seeing that (鉴于)。
考点08 because,as,since和for的区别:
because表示直接原因,回答why的提问;since表示显而易见或已知原因,语气较轻;as 表示已知原因;for表示推测原因,或附加、补充说明,不能用在句首。
---Why are you late?
---Because I miss the bus.
-你为什么迟到了?
-因为我没赶上公交车。
Since you are tired, you’d better have a rest.
既然你累了,最好休息一会儿。
It must have rained last night for the ground is wet.
昨晚肯定下雨了,因为地面湿了。
真题演练
一.选择题(共10小题)
1.(2021•济南)My hometown has changed a lot in the past few years.You the changes if you come.( )
A.see B.saw C.will see D.have seen
2.(2021•东营模拟)﹣How long have you been studying at this school?
﹣I have been studying here______ .( )
A.since I was thirteen years old
B.when I was thirteen
C.at the age of thirteen
D.after I was thirteen
3.(2020•延庆区一模)He'll send us a message as soon as he ________ in Sichuan.( )
A.is arriving B.will arrive
C.arrived D.arrives
4.(2021•中山市模拟)﹣Do you know if sh