I won’t help her unless she asks me to. 除非她要求我,否则我不会帮她。
He didn’t come because he was ill. 因为他病了,所以没来。
As he hasn’t appeared yet, we shall start without him. 既然他还没有出现,我们就先开始吧。
Since everybody is here, let’s begin. 既然大家都到了,咱们就开始吧。
4.连词in order than, so that引导目的状语从句;so … that …引导结果状语从句:
I locked the door in order that we might continue our discussions undisturbed. (=I locked the door in order to continue our discussions undisturbed.) 我把门锁上了,以便我们可以继续讨论而不受打扰。
The car ran so fast that I couldn’t see who was in it. 汽车跑得那么快,我没看清谁坐在里面。
5.连词than, as…as…, not as/so…as…用来引导比较状语从句:
He is better educated than his brother. 他比他兄弟受的 教育 好。
He is as well educated as his brother. 他和他兄弟受的教育一样好。
He is not as/so well educated as his brother. 他没有他兄弟受的教育好。
6.连词although, though 引导让步状语从句;where, wherever 引导地点状语从句:
I’ll go wherever you go. 不管你去哪儿,我就去那儿。
Stay where you are! 原地别动!
Though/Although she is rich, she’s not happy. 尽管她富有,但她并不幸福。
Words are used to form patterns of English grammar and syntax. Each word falls into one of eight categories referred to as parts of speech. Here are the eight commonly recognized parts of speech.
Certain words have further categorization such as: adverbs of frequency: always, sometimes, often, etc. or determiners: this, that, these, those . However, the basic categorization of words in English fall into these eight categories.