A.一过的考察情景：Oh， I didn't know you played so well.(过去不知道)
When she came to ，she didn't know what had happened.
He asked me where I had been during the summer holidays.
The boy was delighted with his new story book which he had been wanting for a long time.
The crazy fans had been waiting anxiously at Hong Kong Airport till their star Ella arrived.
有些词无被动形式大家需要注意，如turn out to be， prove to be， occur，主动表被动形式等等。
His words proved/turned out to be true.
1)情态动词表示推测的情况：+be doing 表示对现有情况的推测
+have done 表示对过去/已有情况的推测
----Have you seen Louisa？ She's got sunburnt.
----She must have spent too much time outside in the sun.
His father must have been a handsome boy twenty years ago.
2)should have done 该做而没做
shouldn't have done 不该做却做了
You shall get your book by Friday.
It was not until 12 o'clock did he come back.
It was 12 o'clock that he came back.(强调句型中that之后是陈述语序)
If I were you， I would go with her.
Had I followed your advice， I wouldn't have made such mistakes.
If I were to have/had/should have time. I would go with her.
It felt funny watching myself on TV.
I don't think it possible to master a foreign language without memory work.
把It is/was that 结构删掉之后，原来的成分能组成完整的句子(因为强调句型本身就是嵌入式结构)
that 代指上文的一类情况The weather in Beijing is cooler than that in Jiangsu.
anything but. He is anything but hard working
if anything .-----Is he a hard working student？
-----No， he is a lazy one， if anything.
something of I felt something of tired.
Four of my friends， travelling from London to Beijing， paid a visit to my school last week.
Supported by his school. Mark set up a nes sound lab for his students to practice English.