专升本英语语法基本知识（下）思维导图

连词: when, whenever, before, after, while, as, once (一旦)，until, (ever) since, as soon as等。

(时间和条件状语从句中表示将来的情况通常用一般现在时。)

eg: When you cross a road, you must be careful.

It will not be long before we meet again.

She comes here every month since she was a child to see her grandmother.

As soon as I know it, I'll tell you.

连词: where和wherever.

eg: Sit down wherever you like.

Put it where you found it.

连词: if, unless, as/so long as (只要)，in case(万一)等。

eg:As/So long as we don't give up, we are bound to succeed.

In case I gorget, please remind me of that.

If it snows tomorrow, we will stay at home.

I will do anything as long as it is interesting.

连词: because,as (由于，因为)，since (由于，既然)，now that (既然)，that,等。

eg: As I didn't know the way, I asked a policeman.

Since no one is against, we'll adopt the proposal.

Seeing that she's ill, she's unlikely to come.

I’m glad that you’ve come.

Now that the kids have left home,we’ve got a lot of extra space.