意思是一樣的,但用法有點(diǎn)差別，why not后面直接接動(dòng)詞原形。why don't 后面要先接主語（即名詞或代詞），才可以接動(dòng)詞原形。舉例 why not come ealier?等于why don't you come earlier?

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)心的人說說又何妨?

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，做為你的問題或成就感的解藥。

4. We haven't seen them for ages; why not ask them over for lunch on sunday?

我們很久沒有見到他們了，何不星期天請(qǐng)他們到家里吃午飯呢?

5. Since there is nothing we can do, why not let nature take its course?

既然我們無能為力，何不順其自然呢?

why don't的例句及翻譯：

1. Why don't you leave this awful hole and come to live with me?

你為什么不離開這個(gè)破地方，搬過來和我住?

2. Now you're settled, why don't you take up some serious study?

既然你已經(jīng)安頓下來了，為什么不開始正經(jīng)地學(xué)點(diǎn)東西呢?

3. Actually we do have a position in mind. Why don't you fill out our application?

實(shí)際上我們的確在考慮一個(gè)職位，你先填一下我們的求職表好嗎?

4. Why don't you learn Esperanto when you have such a good teacher at your side?

守著這樣好的老師，你為什么不學(xué)世界語?

5. Why don't they stop pussyfooting around and say what they really mean?

他們?yōu)槭裁床荒懿辉匍W爍其詞，說出他們真正的意圖呢?

6. Why don't you see if you can scare up a cup of coffee?

你看看能不能好歹沏一杯咖啡?