常用情态动词的基本用法一级二级三级考点
can/ could 能力(体力,智力,技能)
允许或许可(口语中常用)
可能性(表猜测,用于否定句或疑问句中) can not / cannot /can’t do/ couldn’t do
Can…do…? Yes,…can.
No,…can’t.
may 可以(问句中表示请求)
可能,或许(表推测)
祝愿(用于倒装句中) may/might not do
May…do…? Yes,…may.
No,…mustn’t/can’t.
might Might…do…? Yes,…might
No,…might not.
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高中英语单词表3500词
高一英语单词
must 必须,应该(表主观要求)肯定,想必(肯定句中表推测) must not/mustn’t doMust…do…? Yes,…must.No,…needn’t/don’t have to.have to 只好,不得不(客观的必须,有时态人称变化) don’t have to doDo…have to do…?Yes,…do. No,…don’t.ought to 应当(表示义务责任,口语中多用should) Ought…to do…?Yes,…ought. No,…oughtn’t.shall 将要,会用于一三人称征求对方意见用于二三人称表示许诺、命令、警告、威胁等 shall not/shan’t doShall…do…?Yes,…shall. No,…shan’t.should 应当,应该(表义务责任)本该(含有责备意味) should not/shouldn’t doShould…do…?will/would 意愿,决心请求,建议,用在问句中would比较委婉 will not/won’t doWill…do…?Yes,…will. No,…won’t.dare 敢(常用于否定句和疑问句中) dare not/daren’t doDare…do…?Yes,…dare. No,…daren’t.need 需要必须(常用于否定句和疑问句中) need not/needn’t doNeed…do…?Yes,…must. No,…needn’t.used to 过去常常(现在已不再) used not/usedn’t/usen’t to dodidn’t use to doUsed…to do…?Yes,…used. No,…use(d)n’t.Did…use to do…?Yes,…did. No,…didn’t.1. What a pity! Considering his ability and experience, he ________(do)better.2. To make the most of your time, live every moment as if it ________ (be )your last. 3. The Internet plays an important role in our life. Without the Internet, life _______(be) quite different nowadays.4. A survey has shown that 40% of those killed in traffic accidents _____(save)if they had been wearing seat belts.5. They advocate the proposal we were opposed ________(be ) rediscussed at the next meeting.1. might have done【解析】句意:太可惜了!就他的能力和经验而言,他本可以做得更好。根据句意可知,此处应用might have done表示“本可以……”。can have done通常只用于否定句和疑问句。2.would be【解析】句意:因特网在我们的生活中发挥了重要的作用。如果没有因特网,今天的生活就是另一番景象了。Without the Internet相当于一个非真实条件状语从句,表示与现在事实相反的假设,故填would be。3. could have been saved【解析】句意:一项调查表明,在交通事故中丧生的人,如果当时一直系着安全带,那么他们中40%的人有可能不会丧命。根据if they had been wearing可知,此处是对过去情况的虚拟,主句谓语的形式应为“would/could/might/should+have done”,根据句意应表示“可能”而不是“应该”。4. were【解析】句意:要充分利用时间,把每一刻都当作生命的最后一刻来生活。此处是与现在事实相反的一种虚拟,故用we re。5. should be 【解析】句意:他们主张我们反对的那个提议应该在下次会议上重新讨论。be opposed to sth.为固定短语,由此可知此处首先需要补充完整,再分析句子成分可知,advocate后的从句为宾语从句,需要用虚拟语气,即“(should+)动词原形”。