as 句型、prefer 句型、when 句型、seem 句型、what 引导的名词性从句等。
例：Asit isin your country, we grow wheat in the north and rice in the south.
prefer to do sth
例：I prefer to stay at home.
be doing sth...when...
例：He was still smiling when the door opened and his wife came in.
It +seems + that从句
例：It seemed that everyone was satisfied.
She is taller than I by three inches.
例：What surprised me is that everybody seemed to be very indifferent to her.
too ... to do ...
例：Politics is too important to be left to the politicians.=Politics is so important that it can't be left to the politicians.
例：This is the house where he lived last year.
wish that sb did sth 但愿或人目下当今做某事
例：I wish I were as strong as you.
would rather 句型
would rather do sth than do sth 甘心做……而不肯做……
例：She would rather die than turn against his motherland.
before sb can/ could … 或人还没来得及……
例：Before I could get in a word ，he had measured me.
It is /was +被强调局部+thatwho...
例：It was I who wrote to my uncle yesterday.
would like to/ would love to have done sth.
例：I would like to have written to you.