2020-06-19

so,nor,neither` 位于句首,表明承前句子的肯定或者否定用倒装

so...that 将so 引导的部分位于句首倒装

only 引出的状语放在句首倒转

一丶虚拟语气

虚拟与其,与事实相反,或者语气委婉

1. if 引导的 条件状语从句

if you are a tear in my eyes,i will never shed it

if i was a dog,i could sleep with you in bed

条件状语变成虚拟语气,只需要把已经写好的时态,变成过去式

情态动态没有时态 ,一般过去,现在完成时

并且在虚拟语气中 过去式

be --- were

could == would == might

if i remember you in my next life 

i would never seperate with you

状语从句,主句和从句都尚未发生,主句一般将来时,从句一般现在时,

when love comes , i will hold her hands

when love come, i failed to  hold her hands 

二丶虚拟语气,特殊用法

1. 以下情况从句用 "should + v" 表示虚拟,并且should 可以省略

   以防 for fear that ,in case ,lest

   命令 order.direct , command

   建议 advise ,suggest ,propose

   要求 ask,equest,demand, require

   用虚拟

   是必要的 it is necessary / important /vital == 替换important that

in case that you should develop fatal infections, you had better stay at home

2. 一下情况从句用过去是表示虚拟

   常见的有两个:would rather 和 it is high time that

it is hight time that the independance of rids ware cultiveted by senior citizens

3. 一下情况要区别对待 ,就是把它原有的时态变成过去式就行了
   • 常见的词, wish ,if only(如果什么该多好),but for(要不是) ,or/otherwise(否则); as if/ as thought(好像似乎)

情态动词

表明说话人主观态度的词汇--- 表明态度

情态动词后面加动词原形,相当于助动词

• 情态动词表示现在和将来的推测

  情态动词+v

• 情态动词表示对过去的推测

  情态动词

he must have been self in

you need not have show your love in this way

must have done 一定做过某事 must not 禁止某事

need have done 本没必要做某事,但是做了

could have done 本能够做某事,但是没做成

should have done 本应该做某事,但是没做