why don't you和why not的區(qū)別有哪些

兩個(gè)句子結(jié)構(gòu)不同：why don't +主語(yǔ)+動(dòng)詞；why not一定要直接跟動(dòng)詞，動(dòng)詞前不能有其他成分；why don't 結(jié)構(gòu)可以有時(shí)態(tài)的變化，比如變?yōu)檫^(guò)去why didn't，完成式 why haven't 等，why not沒(méi)有時(shí)態(tài)變化。

why don't you和why not的區(qū)別

這兩個(gè)句式,在表達(dá)"建議"時(shí),是一樣的意思.既"(你)為什么不做.....?",或"(你)應(yīng)該做.....".如：

1、Why don't you turn to the reference book?

2、Why not turn to the reference book?

"(你)為什么不看參考書(shū)呢?"也就是"你應(yīng)該看一下參考書(shū)".

但是Why don't you do還可以作為一個(gè)疑問(wèn)句使用,提出疑問(wèn).如：

Why didn't you see the football match?

"你為什么沒(méi)有看這場(chǎng)足球賽?"

時(shí)態(tài)不同

1、why don't 結(jié)構(gòu)可以有時(shí)態(tài)的變化，比如變?yōu)檫^(guò)去why didn't，完成時(shí) why haven't 等。

2、why not沒(méi)有時(shí)態(tài)變化，都是一般現(xiàn)在時(shí)。

側(cè)重點(diǎn)不同

1、why not可以獨(dú)立成句，而why don't不可以。

2、why not和Why don't都可以引導(dǎo)疑問(wèn)句，表示一種建議的意思，例如：

Why not try again?=Why don't you try again?

你為什么不再試一試呢?

why not例句及翻譯

1. Do not always say that their old, out of mind the old, white-haired then why not?

不要總說(shuō)自己老了，心不老，白發(fā)蒼蒼又何妨?

2. If white lies can make things go smoother, why not tell them to the person you care about most?

如果善意的謊言能讓事情進(jìn)行的更順利，那對(duì)自己最關(guān)心的人說(shuō)說(shuō)又何妨?

3. Why not cooperate with it instead of avoiding relationships or continuing to pursue the phantom of an ideal partner as an answer to your problems or a means of felling fulfilled?

何妨和關(guān)系合作?而不是回避它，或繼續(xù)追逐那個(gè)理想伴侶的幽靈，做為你的問(wèn)題或成就感的解藥。