用it is…before造句？
It is five days before the summer vacation.
It+be+时间+before
这个句型中的时间一般为表示一段时间的词语（a long time，long years，weeks，a few days，several months，many hours，minutes），
若主句中的谓语动词用肯定式，意为“过多长时间才……”。
若主句的谓语动词是否定式时，我们可以将其译为“没过多长时间就……”，
主句的时态可以用过去时was或将来时will be。
用will be时，before从句常常用一般现在时表示将来时。
例如：
It was long before he learned those boring poems by heart yesterday afternoon.
昨天下午他过了好久才背会那些枯燥的诗歌。
英语造句求帮助
it be+强调内容+that /which +时间名词+before/one/when
it be+形容词/名词+从句
it was（not）/will（not）be+一段时间名词+before...
it is/has been +一段时间名词+since
it was+时刻名词+when
when做别列连词时造句
以上,悬赏只有50了.2 It is difficult that we should finish the work in 20 minutes.
3 It wo'nt be long before i finish the work
4 It is /has been five days since the old man died
5 It was yesterday when he finished the work
When i reached the railway station,the train had left.相关试题【6】
用it would not be long before造句
It would not be long before I complete school.
It would not be long before I come home.
It would not be long before I finish all my homework.相关试题【7】
用before造句,句中有主语谓语表语 急
I want to think it over before I decide about joining it.
在决定参加之前,我想考虑考虑.
I heard about him long before I saw him.
我在没见过他之前就听说过他.相关试题【8】
用before long 造句子
fefore long 不久以后
Before long he will have forgotten all about the matter
不久以后他就会把这件事全忘记的。
Before long, Apple might even need a Steve Jobs to come back and save it again.
不就以后，苹果可能会需要乔布斯回来拯救它
