虚拟语气would should could might四个词用法讲解我的意思是什么时候用would或should或could或might

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• 与将来事实相反的英语虚拟语气与将来事实相反,从句用动词过去式did或should+动词原形v.或were to+动词原形v.主句用should/would/could/might +do,其中从句中should+动词原形时should可省略么?如lest,for fear that引导的目的状语从句中,should可以省略,The thief ran quickly lest he (should) be seen by the policeman.不知我所举例子是否符合
• 与将来事实相反的英语虚拟语气与将来事实相反,从句用动词过去式did或should+动词原形v.或were to+动词原形v.主句用should/would/could/might +do,其中从句中should+动词原形时should可省略么?如lest,for fear that引导的目的状语从句中,should可以省略,The thief ran quickly lest he (should) be seen by the policeman.
• 关于wish引导的虚拟语气问题大家都知道,如果wish后面跟表示对将来的主观意愿,其从句谓语结构为：would/should/might/could+动词原形.有的书上说,在这种情况下,主句的主语与从句的主语不能相同,因为主句的主语所期望的从句动作能否实现,取决于从句主语的态度或意愿. 但我们又会见到这样的句子：I wish I could fly to the moon one day.我希望有一天我会飞.那这样不是与上面那种说法冲突了么?哪位高手解释一下?
• 虚拟语气从句中过去将来时的这四个助动词都可以用吗?在虚拟语气中,除了if条件从句,其他从句的谓语是过去将来时或过去将来完成时的时候,里面的助动词是不是这四个词都可以用would,should,could,might?还是哪几个不能用?请问，下列虚拟语气从句的谓语里面的这四个助动词是不是都可以用?还是哪几个不能用？1.wish+主语+ would/should/could/might +动词原形2.if only+主语+ would/should/could/might +动词原形3.would rather+主语+ would/should/could/might +动词原形4.as if+主语+ would/should/could/might +动词原形
• 虚拟语气 would 或should?Had you prepared for your lecture ,you__ more fluently.A.should have spoken B.would have spoken C.woudl speak D.had spoken A 也可以的吧?虚拟语气过去时的用法,主句不是would /should /could /might +have +过去分词吗?
• 虚拟语气would should could might四个词用法讲解我的意思是什么时候用would或should或could或might
• 关于虚拟语气中的从句~在虚拟语气中,与将来事实相反主句用would/could/should/might do从句用were to 或should do .从句should do中的should能换成would/could/might吗?
• 如图，质量为0.5kg的杯子里盛有1kg的水，用绳子系住水杯在竖直平面内做“水流星”表演，转动半径为1m，水杯通过最高点的速度为4m/s，（g取10m/s2）求： （1）在最高点时，绳的拉力大小．
• 如图所示,质量为0.5kg的小杯里盛有1kg的水,用绳子系住小杯在竖直平面内