1. although / though
Everybody worked with great enthusiasm although/though the weather was extremely cold. 虽然天气很冷，大家工作得非常起劲。
2. even if (though)
Even if I have to walk all the way I'll get there. 即使我得一路走着去，我也要去那里。
五）引导比较状语从句的从属连词有：
1. than
We have produced 20% more cotton this year than we did last year. 我们今年棉花产量比去年高百分之二十。
2. as (so)...as
He doesn't play half as well as his sister. 他演奏的
水平不及他姐姐的一半。
六）引导目的状语从句的从属连词有：
1. lest
She explained again and again lest people should misunderstand her. 她一再解释唯恐人们误解。
2. so that
Speak clearly so that we may understand you. 讲话要清楚，以便我们能听明白。
3. in order that
He assigned us some books to read at home in order that (so that) we might have a deeper understanding of the subject. 他指定几本书给我们回家看，以便我们对这一主题有一个较深的了解。
八）引导名词性从句的连词有三个：(1)that (本身无意义)，(2)whether (or not)，(3)if。例如：
That they will refuse the offer is unlikely. 他们不太可能会拒绝这个建议。
I don't know whether (=if) these figures are accurate. 我不知道这些数字是否精确。
需要注意的是：whether (or not) 可引导大部分名词性从句；if仅可引导宾语从句，而且不可跟or not。例如：
Whether (≠if) they will come or not won't make much difference. 他们来不来关系不大。
I wonder if (=whether) she has received our telegram. 我不知道她是否收到了我们的电报。 先行词与关系词的关系
引导定语从句的词被称为关系词。关系词根据其在定语从句中的功能可分为关系代词和关系副词。关系代词在定语从句中作主语、宾语、表语、定语等, 关系副词在定语从句中作状语。
含有定语从句的句子一般分为两层：即主句层（第一层）, 定语从句层（第二层）。
并列连词和从属连词
