为什么不说成It was getting darkly

为什么不说成It was getting darkly It was getting dark.这句话翻译是：天黑了.为什么不是It is getting dark? It was getting darker翻译? get做系动词的用法在the editor was getting impatient这名话中,get是做为系动词用的,但是为什么不说成the editor get impatient呢?在前一句话中,为什么get要用ing形式呢? 连词成句 close,when,the,I,to,was,it,getting,opened,door my toothache___me.l thought it was going away,but it's getting worse and worseA.kills B.is killing C.was killing D.killed 为什么请说理由 英语翻译As it was getting darker,I drove slowly my brother was always getting into trouble with my parents为什么要用was always getting When found that it was getting late, I put off the light and went to bed为什么要改成这样When finding that it was getting late, I put off the light and went to bed.When I found that it was getting late, I put off the light and went to bed这 为什么说 look it up 而不说look it for it deserves protecting为什么不说it deserves protection The traveler lost his way in the woods,and what made things worse was that it was getting dark为什么用what? It was a girl with good manners.这是一位举止得体的姑娘.这里为什么用得是过去时was,为什么不说It is a girl with good manners. She was delighted at getting the job这句话为什么用getting啊 为什么不说it is used for writing with. it is years since i saw him（追加）it is years since i saw him为什么不说it is years since i has seen him而it was years since i had seen him 却可以 It is where you left it为什么不说it is there where you left it my headache is killing me.I ____ it ____away.But now it's getting worse and worse.A.think;is going B.thought;was going C.have thought;is going D.have thought;was going选哪个,为什么?