英语动词根据其过去时态和过去分词可分为规则动词和不规则动词。统计动词的过去式和过去分词由后缀加-ed组成。下面小编给你讲讲英语动词后加ed用法.让我们来看看吧!
英语动词后加ed用法:
a.规则动词过去式的变化可速记为直、去、双、改四字诀。
①一般情况下在动词原形后直接加-ed。如:wanted,played。
②以不发音的字母e结尾的动词,去掉e再加-ed。如:hoped,lived。
③重读闭音节单词需双写最后一个辅音字母再加-ed。如:stopped。
④以辅音字母+y结尾的动词变y为i,再加-ed。如:studied,worried。
规则动词过去式的读音也有规律可循。请记住:清后[t],元浊[d],[t] [d]之后读[Id]。
①清辅音[p] [k] [f] [s] [F] 等后,ed要读[t]。如:worked,finished。
②元音或浊辅音[b] [g] [v] [z] [m]等后,ed要读[d]。如:lived,called。
③[t]或[d]后,ed读[Id]。如:started,needed。
b.不规则动词变化,要逐一熟记。be动词过去式有两种形式,主语是第一、三人称单数形式使用was,其他人称用were。
注意事项:
A) 注意时间状语的搭配。一般过去时的时间状语应该是表示过去某个时间的词或词组,如:yesterday, last month, in 1999, two days ago等,绝对不可与recently, in the past 10 years, this month等连用,因为这样的时间状语都与现在有关系,应该用现在完成时或一般现在时。
B) used to do的否定形式和疑问形式很特别:你怎么写都正确。以否定形式为例:used not to do, didn't used to do, didn't use to do都对。
Used to do经常与 be used to doing sth/ sth结构进行对比。前者表示"过去常常或过去曾经",要求加动词原形;后者表示"习惯于",要求加名词或动名词。
动词appreciate的两点用法:
1. 表示“感激”“赞赏”等,通常为及物动词,其后可接名(代)词、动名词、名词性从句等作宾语,但不能接不定式。如:
I really appreciate a good cup of tea. 有好茶一杯,我就真乐在其中了。
I appreciate your giving me so much of your time. 真感激你为我花了这么多时间。
I appreciate being given this opportunity. 非常感谢给了我这个机会。
I appreciate that you have come here so early. 感谢你来得这么早。
其后不直接跟 if 或when引导的从句,若语义上需要接这类从句,需借助 it。如:
We really appreciate it when she offered to help. 她来帮忙了,我们十分感激。
I would much appreciate it if you would arrange this for us. 如果你能替我安排这事,我将非常感激。
2. 其后只能接“事”作宾语,而不能接“人”作宾语;若接“人”作宾语,可考虑用动词thank等。比较:
正:We appreciate your help. 我们感谢你的帮助。
误:We appreciate you for your help.
正:He thanked her for her help. 他感谢她的帮助。
误:He thanked her help.
动词know的几条用法与搭配:
1. 其后一般不直接跟不定式,但在以下情况可接不定式:
(1) 后接“疑问词(why 除外)+不定式”。如:
I didn’t know what to say. 我不知道说什么。
We don’t know when to start. 我们不知道什么时候出发。
他会弹钢琴。
误:He knows to play the piano.
正:He knows how to play the piano.
(2) 表示知道应该要做某事。如:
She knows not to tell anyone about it. 她知道不该告诉任何人。
比较下面两句,注意其中的how的有无和意思的变化:
Does he know to come here first? 他知道应该先到这儿来吗?
Does he know how to come here? 他知道如何到这儿来吗?
2. 比较 know 与 get [come] to know:前者意为“认识”,是持续性动词;后者意为“开始认识”,是终止性动词。如:
We’ve known each other for 10 years. 我们俩认识10年了。
We got to know each other ten years ago. 我们俩是10年前认识的。
3. know 之后可接不定式的复合结构,主要句型为:
(1) know+宾语+to be(to be通常不省略),这类句型可转换为that引导的宾语从句。如:
I know him to be a fool.=I know (that) he is a fool. 我知道他是个傻瓜。
(2) know+宾语+to do(有时可省略 to),在这类句型中 know 一般只限于用过去时或完成时,通常译为“听说过”“见过”等。如:
I have never known her (to) tell lies. 我从未听说她撒过谎。
I’ve never known her (to) be late before. 我以前从不知道她迟到过。
在被动语态中,不定式必须带 to。如:
He was known to have a quick temper as a boy. 人们都知道他在孩提时代脾气暴躁。
4. 比较:be known as, be known for 与 be known to:
(1) be known as 意为“作为……出名”。如:
She was well known as an excellent dancer. 她作为一个杰出的舞蹈家非常有名。
(2) be known for 意为“因为……出名”。如:
He is known for his poems. 他以他的诗出名。
(3) be known to 意为“为……所知”。如:
He is known to everyone. 大家都熟悉他。
动词 admit 的用法与搭配:
1. 表示“承认”,注意以下用法:
(1) 表示“承认做了某事”,其后通常接动名词不接不定式。如:
She admitted having seen us. 她承认看到过我们。
I admit breaking the window. 我承认打破了窗子。
用于此义时,有时也说admit to,此时的 admit为不及物动词,但该结构中的介词 to 常可省略,省略介词后 admit 即为及物动词。如:
He admitted (to) stealing. 他供认了偷盗。
He admitted (to) feeling a bit tired. 他承认有点累。
(2) 有时其后接带不定式的复合宾语,但其中的不定式通常应是 to be。如:
She admitted him to be right. 她承认他是对的。
You must admit the task to be difficult. 你们得承认任务是艰巨的。
(3) 有时可后接从句。如:
He admitted that it was really his fault. 他承认这确实得怪他。
She admitted that she was afraid of spiders. 她承认她害怕蜘蛛。
2. 表示“允许进入”“使能进入”,可指进入某一具体场所也可指进入某一组织机构等。如:
This ticket admits one person only. 此票只限一人使用。
There were no windows to admit air. 没有窗子可使空气流入。
The school admits 200 students every year. 这所学校每年招收200名学生。
试比较以下两句(注意介词不同)。如:
She was admitted to [into] the Party. 她被吸收入党。
She was admitted as a Party member. 她被接纳为党员。
表示“允许进入”等,也含有动态意味,所以一般不与 enter, go in 之类的词连用。如:
通常不说:He opened the door and admitted me to enter into the house.(可将to enter去掉)
3. 和于习语 admit of,其意为“容许有”“有……余地”“有……的可能”。如:
The price quoted will not admit of any allowance. 所报价格不容打折扣。
This sentence admits of several interpretations. 这个句子可以有许多解释。