1. 不定式的否定式的构成
通常是将否定词not或never置于不定式之前,即构成not to do 或never to do 的形式,注意not和never一定要放在不定式符号to的前面,而不是其后面:
The doctor advised me not to smoke. 医生劝我不要抽烟。
Its politically short-sighted not to do so. 不这样做在政治上是短视的。
He strongly advised me not to do so. 他使劲劝我别这样做。
Take care not to break it. 小心别把它打破了。
Be careful not to break anything. 当心别打破什么了。
She had sense enough not to say anything about it. 她有足够的头脑不提此事。
Father warned me never to drive after drinking. 父亲警告我不要酒后开车。
Visitors are requested not to touch the exhibits. 参观的人请勿触摸展品。
【注意】若不定式为完成式和被动式,否定词应置于整个结构之前:
She pretended not to have seen him. 她假装没看见他。
It is nice not to be dependent on others. 不依靠别人是好的。
You were silly not to have locked your car. 你没锁车太傻了。
2. so as to do sth 和in order to do sth 的否定式
对于这两个结构的否定式,通常是将否定词置于不定式符号to之前,而不是置于整个结构之前或其他位置:
Study hard so as not to fail the exam. 努力学习,以免考试不及格。
He came in quietly in order not to wake his wife. 他轻轻进来,以免把他妻子吵醒。
Go in quietly so as not to wake the baby. 进去时不要出声,以免把宝宝吵醒。
Take every precaution so as not to catch cold.采取一切预防措施以免感冒。
We keep the window shut in order not to let the flies in. 我们把窗子关着以免苍蝇进来。
They hid themselves in the cave in order not to be seen by the enemy. 他们躲在洞穴里以免被敌人发现。
Please reply at once in order not to lose this opportunity of a lower price. 请立即回复,以免失去这次低价的机会。
They must have worn gloves in order not to leave any fingerprints. 他们一定戴上了手套,以防留下指纹。
上一篇: 初中英语语法:要接不定式作为宾语的动词
下一篇: 初中英语语法:一般现在时表示将来
国内英语资讯:China sees forest travel boom in 2018
体坛英语资讯:Gabriel Milito named Estudiantes head coach
国际英语资讯:Women continue to face multiple and intersecting inequalities: Pakistani official
The Ability and Value 能力与价值
国际英语资讯:Third vote on Mays Brexit deal still uncertain as departure date looms
国际英语资讯:AU chief condemns terrorist attack against Malian army
我们心尖尖上的那个人
体坛英语资讯:Brazil World Cup winner Coutinho dies
国内英语资讯:China considers tough law against faulty vaccines
国内英语资讯:Chinese envoy calls for helping DRC with security capacity-building
国内英语资讯:China unveils new individual income tax rules for exemption
国际英语资讯:Feature: U.S. farmers frustrated by damage caused by tariff uncertainties
国内英语资讯:More population to have electricity in Tibet
国际英语资讯:Cambodia, S.Korea ink pacts to boost ties
体坛英语资讯:Ghanaian president applauds Commey for IBF lightweight world title success
The Popularity of Online TV Shows 网络电视剧的流行
国际英语资讯:Arab, African youths play active role in building future: Egypts president
国际英语资讯:2 policemen killed in Pakistan shooting
国内英语资讯:China, Uganda lift ties to comprehensive cooperative partnership
体坛英语资讯:Filipe Luis to decide future after Copa America
国际英语资讯:Moroccans hold sit-ins to condemn New Zealand terrorist attacks
体坛英语资讯:Ballon added to Peru squad for Copa America
国际英语资讯:Australian zoo opens global campaign to save Komodo dragon
国际英语资讯:Islamic body condemns deadly shootings at 2 mosques in New Zealand
国际英语资讯:Indonesia permanently bans Boeing 737 Max 8 from serving flights: official
新发现一种细菌,竟然能帮忙减压,上班族的福音?
国内英语资讯:China ready to continue to play constructive role in South Sudan: envoy
国内英语资讯:Scholar shares in Geneva Chinas experiences in poverty reduction
国际英语资讯:European Peoples Party to fight for same living standard all over Europe: leader
国内英语资讯:Senior legislators meet to study Xis remarks at annual legislative session