知识点是高中英语学习巩固知识点的重要组成部分,下面小编为大家带来高二英语知识点重要归纳,欢迎大家可以参考阅读,希望能够帮助到大家!
高二英语知识点重要归纳
【现在完成进行时】
1. 现在完成进行时的定义
现在完成进行时表示某动作从过去某个时间开始,一直延续到现在,并且还有可能持续下去。如:
We have been waiting for him for two hours. 我们等他等了两个小时。
2. 现在完成进行时的结构
现在完成进行时由“have /has been + 现在分词”构成。
3. 现在完成进行时的应用
现在完成进行时所用的时间状语:this month / week / year, these days, recently / lately, inthe past few + 时间段, since +时间点, for + 时间段。如:
They have been building the bridge for two month. 两个月来他们一直在修桥。
They have been planting trees this month. 这个月来他们一直在植树。
4. 现在完成进行时与现在完成时的区别
(1) 现在完成时强调动作的完成,而现在完成进行时强调动作的延续,因此,表示动作的完成,只能用现在完成时,而不能用现在完成进行时。如:
He has changed his idea. 他改变了想法。
(2)在表示动作的延续时,虽然既可用现在完成时,也可用现在完成进行时,但现在完成进行时强调动作的进行。因此在需要明确表示动作还要持续下去时,应用现在完成进行时。如:
We have been studying here for two years. 我们在这儿已经学习了两年了。
(3) 有些延续性动词(如 keep, learn, live, stay, study,work等),用于现在完成时或现在完成进行时的区别不大。如:
I have lived here for many years.=I have been living here for many years.我在这儿住了多年了。
高二英语知识点必背梳理
四则运算:
1)加法:在口语中,小数目的加法常用and代表“+”,is或are代表“=”。
在正式的场合或较大数目的加法用plus代表“+”,equals或is代表“=”。
7+4=11 Seven and four is/are eleven.
13+12=25 Thirteen plus twelve equals/is twenty-five.
2)减法:在口语中,小数目的减法用“Take away +减数+ from +被减数+ and you get +余数”
“减数+ from +被减数+ leaves/is +余数”
在正式的场合或较大数目的减法用minus代表“—”,equals代表“=”。
12-5=7 Five from twelve leaves/is seven. /Take away five from twelve andyou get seven.
21-7=14 Twenty-one minus seven equals fourteen.
3)乘法:在口语中,小数目的乘法的乘数用复数形式,用are代表“=”。
大数目的乘法用times代表“×”,is/makes代表“=”。
在正式的场合下用multiplied by代表“×”,equals代表“=”。
4×5=20 Four fives are twenty
326×238=77588
Three hundred and twenty-six times two hundred and thirty-eight is/makesseventy-seven thousand five hundred and eighty-eight.
Three hundred and twenty-six multiplied by two hundred and thirty-eightequals seventy-seven thousand five hundred and eighty-eight.
4)除法:小数目的除法:用divided by代表“÷”,equals代表“=”。
“被除数+ divided by +除数+ equals +商”;“除数+ into +被除数+ goes +商”
32÷4=8 Thirty-two divided by four equals eight.
Four into thirty-two goes eight.
大数目的除法:用divided by代表“÷”,equals代表“=”。
216÷8=27
Two hundred and sixteen divided by eight equals twenty-seven.
高二英语知识点语法必考
同位语从句
同位语从句就是在复合句中作名词的同位语的名词性从句。
1.同位语从句的功能
同位语从句对于名词进一步解释,说明名词的具体内容,一般由that引导,例如:
1) The king's decision that the prisoner would be set free surprised allthe people.
2) The order that all the soldiers should stay still is given by thegeneral.
2.同位语在句子中的位置
同位语从句有时可以不紧跟在它所说明的名词后面,而是被别的词隔开。例如:
He got the news from Mary that the sports meeting was put off.
3.同位语从句与定语从句的区别
(1)定语从句中的that既代替先行词,同时以在从句中作某个成分(主语或宾语),而同位语从句中的that是连词,只起连接主句与从句的作用,不充当句中任何成分。
(2)定语从句是形容词性的,其功能是修饰先行词,对先行词加以限定,描述定的性质或特征;同位语从句是名词性的,其功能是对名词进行补充说明。例如:
1) The news that he told me is that Tom would go abroad nextyear.(他告诉我的消息是汤姆明年将出国。)(第一个that引导的从句是定语从句,that在从句中作宾语)
2)The news that Tom would go abroad is told byhim.(汤姆将出国的消息是他讲的。)(同位语从句,that在句中不作任何成分)