As well as 以及，同样。并列单词、短语、句子。并列主语时，动词要随前面的主语变化 .如：He works as well as he can
Either…or 既…又…，或…或…，并列主、谓、宾、表及状语 ，如：Either come in or go out.
Neither…nor 既不…也不， 并列主、谓、宾、表、状语，并列主语时，谓语就近一致。如：Neither you nor he is lazy.
Both…and 和，既…也，并列主、谓、宾及表语。I can speak both English and French.
nor 也不，引导句子要倒装 。如：He can not play the piano, nor can I.
so 因此，所以，不和because连用。如：You like swimming, so do I.
1) 从属连词的用法： 从属连词有：after, when, before, as, while, since, until, till, if, unless, because, than, that, whether, so that
after 表示“时间”，在…之后。如：After I finished the school, I became a worker in the factory.
Although/though 表示让步， “尽管”。如： Although she is young, she knows a lot.
as 表示时间，“当…时”，方式“象…”，原因，“由于、因为”让步，“尽管、虽然” 。如： As it was rainy, we couldn’t go out now.
As if/as though 表方式，“似乎、好像” 。如： He told us such a story as though he had been there before.
As long as/so long as 表条件，“只要” 。如： As long as I am here, I’ll go to help you.
As soon as 表时间，“一…就…”。如： I will call you as soon as I come back.
because 表原因，“因为”。如： I have to practice more because I am not good at English.
before 表时间，“在…之前’’ 。如： You should think more before you do it.
Even if/ even though 表让步，“即使”。如： You should try again even if you failed.
Hardly…when 表时间，“(刚)一…就”。如： Hardly I entered the gate when the bell rang.
if “假如”，引导条件状语从句。如： We will stay at home if the rain doesn’t stop.
“是否”，引导宾语从句。如; I don’t know if he goes shopping.
In order that 表目的，“为了，以便”。如： We study hard in order that we can pass the exam.
No matter +疑问词 表让步，“无论，不管”。如： No matter what you do, you should try your best.
No sooner…than 表时间，“刚一…就…”。如： No sooner had I come home than it began to rain.
once 表时间，“一旦…”。如： Once you read this book, you’ll never forget it.
since 表时间，“自从…以来”.如： He has been in this city since he left school.
表原因，“既然，由于” 。如: Since the job is dangerous, let’s do it more carefully.
so far as/as far as 表条件，“就…而言，就…而论”.如：As far as I know, it is easy for you to speak in English.
So that 表目的，“以便” 。如： Speak loud so that everybody can hear clearly.
So…that 表结果“如此,以致”。如： He got up so early that he caught the early bus.
than 表示比较，“比” 。如： Things were worse than we thought.
unless 表条件，“除非，如果不” 。如： You will fail in the test unless you study hard.
Until/till 表时间，“直到…为止” 。如： I’ll wait till my mother comes back.
when 表时间，“当…时’’。如： When they got there, the train has left.
whether “是否”引导名词性从句 。如： Whether he can come to see us is unknown.
表让步，“不管/无论、是否”。如：Whether she is rich or poor, she is always happy.
while 表时间，“当…时” 。如： While he was in Beijing, he visited the Great Wall.
whenever 表时间，“无论什么时候”。如： Whenever you meet any trouble, tell me at once.
，我们将会及时处理。
