Ⅰ动词不定式: 动词不定式的时态和语态 1)构成:构成:
主动态:一般式to do;完成式to have done;进行式to be doing;完成进行式to have been doing
被动态:一般式to be done;完成式 to have been done
否定式:not+不定式
2)不定式的时态:
①不定式的一般式表示的动作与主句谓语动词表示的动作同时发生或之后发生。
He seems to know her address.
I hope to see you again.
②不定式的进行体表示的动作正在进行,与主句谓语动词表示的动作同时发生。其用法主要有以下几种情况:
a 常用在appear,happen,pretend,seem,hope,promise之后。
She pretended to be listening attentively.
Tom appeared to be living in this area.
I hope to be earning my living in a years time.
I promised to be waiting at the door when he came out.
b 常用在believe,consider,suppose,think,know,report,say,understand等动词的被动式之后。
He is thought/known/believed/said/supposed to be living in this area = People think/know/ believe/ say/suppose that she is living abroad.
be supposed to通常含有应该意思,表示一定的责任和义务。
You are supposed to know how to use a computer=You should know how to use a computer.
You are supposed to have been studying=You should have been studying.
Students are not supposed to cook in their dormitory=Students shouldnt cook in their dormitory.
3)不定式的完成体:
①用于表达发生在主句谓语动词之前的动作或状态,也可以表达预计在将来某一时刻之前完成的动作或状态。
I am sorry to have given you so much trouble.
Were leaving at five oclock in the morning,and hope to have done most of the journey by lunchtime.
②不定式完成进行体主要用于appear,seem,happen,pretend等之后,也可用于believe,know,report,say,understand等动词的被动式之后。
He appears to have been waiting for a long time.
He is believed to have been waiting for a message.
不定式的完成进行体与不定式的完成体略有不同,试比较:
He seems to have eaten the apples.
He seems to have been eating the apples.
③不定式的完成体还可以表达本该发生却未发生的事情常带这种不定式的谓语动词有:pretend,intend, appear,seem,should like,expect等。
上一篇: 第一次雅思阅读总结
下一篇: 雅思阅读8分感言:高分要抓三方面
小学二年级英语上册教案:Unit 1 Hello
2015年终盘点汇总
国际英语资讯:U.S. defense chief in Baghdad on unannounced visit: TV
小学一年级英语教学设计方案:j q x
国际英语资讯:China Focus: Yuan tumble unlikely despite weakening
毁掉整个星期睡眠的坏习惯
英语单词不用逐个背,252个词根就够了(五)
三年级英语上册教案:Recycle 1 第一课时
体坛英语资讯:Wolf chosen as official mascot of FIFA World Cup 2018 in Russia
狗狗的鼻子为什么总是湿的?
国内英语资讯:Special envoy of Chinese president pays respects to late Thai King
害怕失败所以什么都不敢做?7步帮你克服!
国内英语资讯:Chinese state councilor meets French strategist
小学四年级英语上册教案:Unit 1 My classroom
国际英语资讯:Spotlight: EU wraps up two-day summit, seeking to solve thorny issues of migration, trade, Ru
国内英语资讯:Lippi appointed head coach of Chinas national soccer team
挺希or挺特?1/4美国青年宁可地球毁灭
国内英语资讯:China determined to push forward fight against corruption: Xi
小学一年级英语教学设计方案:Who is the first?
国际英语资讯:WTO chief blasts protectionism as wrong remedy for economic uncertainty
小学五年级英语上册教案:Unit1 My new teachers
国际英语资讯:Brazilian Development Bank president urges implementation of reforms proposed by government
国内英语资讯:Chinese vice premier eyes more infrastructure cooperation with Uzbekistan
你的孩子希望你在社交媒体上停止做这三件事
美国6500万人在家不说英语 300万说中文
女人不婚也幸福?!那要老公有卵用
(最新)人教版四年级英语上册教学设计方案:Unit 3 My friends
国内英语资讯:Premier Li expects early conclusion of China-U.S. investment treaty negotiations
国内英语资讯:Chinas Tibetan cultural delegation wraps up Britain visit
新型显示屏薄如纸张可随意弯曲