2022年12月四级语法知识点比较状语从句.docx

2022年12月四级语法知识点：比较状语从句than, asas，not so as，(not) the same as, the+比拟级;eg：Light travels fast than sound.the+比拟级：eg：The sooner，the better.eg：Girls are thus seen as less valuable than boys and art kept at home to do housework while their brothers are sent to school - the prophecy(预言) becomes self- fulfilling, trapping women in a vicious circle (恶性循环) of neglect.(1)当的时候：while, when, as ;when：强调一件事情正在发生的时候，另外一件事情突然发生;eg：When I was watching TV, my mother came back.while：强调两个动作同时进展，一边一边;eg：My father is cooking while my mother is reading newspaper.as：“随时间推移“eg：As time went by, the days became longer and longer.(2)一就：as soon as ,主将从现;用directly，immediately, instantly连接两个句子;一些名词如the minute，the moment, the instant也可表示;no sooner than, hardly when后面的句子需要倒装;eg：I will write to you the moment/minute I arrived in Paris.(3)特别单词：by the time that, every/each time(使用时后面不要再加when)(4)till否认形式表达的意思是“直至某时才做某事“，一般用until，动词为连续性或非连续性都可以;eg: I slept until midnight.Wait till I call you.She didn”t arrive until 6 o”clock. Until可用于句首，而till通常不用于句首，通常用于句中;eg: Until you told me, I had heard nothing of what happened.eg：As you sleep you pass through a sequence of sleep stateslight sleep, deep sleep and REM (rapid eye movement) sleepthat repeats approximately every 90 minutes.