怎样学精情态动词 (Modal verbs)
can: 从客观性视角阐述大家都掌握的真理的客观性
●can 表明客观性工作能力, 与先天性、后天性工作能力不相干。
Birds can fly up into the sky easily.
小鸟能够随便地飞往天空去。
Luke can speak Chinese very fluently.
鲁克的中文说得很流畅。
●can表明每个人都掌握的客观性概率或聪明人已经知道的真理的客观性。
If you are brave enough, all difficulties can be overcome.
假如你不畏艰难，全部的艰难都一定会摆脱。
Correct ideas can be transformed into a material force that changes the world.
恰当的核心理念一定可以转换为*的物质力量。
I hear that you are going to Thailand. It can be dangerous to be there, I think.
听闻你需要去泰国旅游，我看到那里去挺风险的。
may: 表明说听彼此均不准确，等同于I am not sure
●推断或掌握概率
The man you are looking for may be in that room.
May I have a talk with you?
He may never succeed without your help.
●根据may本身的可变性，常放置句首，用于表明祝福
May success attend you! 祝你成功！
(May) God bless you! 愿上帝保佑你！
●You can/may come at any time. (英语口语中can和may从不一样含意视角均可应用。)
ought to: 从客观性视角表明分配、义务或责任
●You ought to do the cleaning after school BECause you are on duty.
你下课后应当做环境卫生，由于今日你值日。
You ought not to write so carelessly.
(It is the students’ responsibility.学员应当搞好的事)
Everybody should /ought to help each other in the study, shouldn’t / oughtn’t they?
(在反义疑问句中should和ought to有时候能够前后左右交叉式应用，具有主观因素相辅相成的功效)
