分析 A good sleep helps you relieve physical and mental stress while insufficient sleep may lead to various diseases.
解答 A good sleep helps you relieve physical and mental stress while insufficient sleep may lead to various diseases.
這是對(duì)睡眠質(zhì)量的一種看法,所以用一般現(xiàn)在時(shí).
本句重點(diǎn)考查連詞while的用法,while表示對(duì)比關(guān)系,引導(dǎo)狀語(yǔ)從句,表示同類(lèi)事物之間的對(duì)比,常譯為"然而,可是".help sb (to)do sth幫助某人做某事,relieve physical and mental stress釋放身心壓力; lead to導(dǎo)致.
點(diǎn)評(píng) while引導(dǎo)狀語(yǔ)從句,有以下兩種含義:
1.表示某個(gè)動(dòng)作正在進(jìn)行的同時(shí),另一動(dòng)作也在進(jìn)行之中,這時(shí)主從句都用進(jìn)行時(shí)態(tài),有對(duì)同類(lèi)的兩個(gè)動(dòng)作進(jìn)行對(duì)比的意味.如:
While I was playing the piano,she was dancing.我在彈鋼琴,她在跳舞.
2.表示某個(gè)動(dòng)作正在進(jìn)行時(shí),又發(fā)生了另一動(dòng)作(該動(dòng)作用一般過(guò)去時(shí)).如:
While I was reading,I fell asleep.我讀著讀著就睡著了.
while還有以下幾種常見(jiàn)用法:
1.只要(=as long as)
There will be life while there is water and air.只要有空氣和水,就會(huì)有生命.
2.而;然而〔表示對(duì)比〕
He is a driver while I'm a teacher.他是司機(jī),而我是老師.
3.雖然(=although);盡管〔表示讓步〕
While I see what you say,I can't agree with you.雖然我能理解你說(shuō)的話,但是我不能同意你.
4.用作名詞,表示"一會(huì)兒或一段時(shí)間",常與a,the或this等連用.如:
Just wait a while and then I will help you.等一下,我會(huì)來(lái)幫你的.
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