4.由when,where,why引导的定语从句。例如:
I know the reason why he came late.
This is the place where we lived for 5
years.
I will never forget the day when I met
Mr.Liu.
注意:先行词是表示地点时,有时用where,有时用that (which)引导定语从句。这时要根据从句的谓语动词是及物的还是不及物的。如果是及物的就用that(which),否则用where。例如:This is
the house where he lived last year.
This is the house that (which) he visited
last year.
用no sooner…than和hardly…when引导的从句表示“刚……就……”。主句中的动词一般用过去完成时,从句用过去时;而且主句一般倒装,把助动词had提到前面。例如:Hardly had I entered the
room when I heard a loud noise.
当我们要表示“某件事已成”时,应用“was (were) able to”,而不能用“could”。例如:He was
able to go to the party yesterday evening and he enjoyed himself very much.
L
倒 装
英语句子的自然语序是主语在前,谓语动词在后。把谓语动词放在主语之前,就叫倒装结构。如果全部谓语放在主语之前,叫全部例装;如果只把助动词或情态动词放在主语之前就叫部分倒装。倒装结构通常用于下列场合。
(一)完全倒装