结果状语从句 so...that,sothat,such...that suchthat,tothedegreethat,
totheextentthat,tosuchadegreethat,
tosuchanextentthat
条件状语从句 if,unless suppose,supposing,providing,provided
(特别关注：supposed,
provide不用作条件从句的连词)，
onconditionthat,solongas,aslongas
让步状语从句 although,though,
eventhough,evenif
while(一般用在句首)，as(用于倒装结构)，whatever,whoever,
whichever,however,whenever,
wherever,whether...or...,
as+adj.+as+主谓结构(句首)
比较状语从句 as,than themore...,themore...just as...,
so...AistoBwhat/
asCistoDnomore...thannotAsomuchasB/
notsomuchAasB
方式状语从句 as,theway