what time常用來(lái)問(wèn)鐘點(diǎn),而when除了問(wèn)鐘點(diǎn)外,還可用來(lái)問(wèn)日期,月份,年份等.有時(shí)兩者可以換用,有的場(chǎng)合不可以.
1.問(wèn)鐘點(diǎn)時(shí),可以換用.
When do you go to school?
What time do you go to school?
2.問(wèn)日期,月份,年份等,只能用when
When were you born?I was born on July 2,1972.
3,當(dāng)問(wèn)某事在某天的什么具體時(shí)間進(jìn)行,只能用what time
What time did you call this afternoon?
I called at 4:00 this afternoon.
另注:
when :
一,副詞 ad.
1.(用作疑問(wèn)副詞)什么時(shí)候,何時(shí)
I'd like to know when they'll let him out.
When did you last see Margaret?
2.(用作關(guān)系副詞,引導(dǎo)關(guān)系從句)當(dāng)...時(shí)
There were times when I didn't know what to do.
二,連接詞 conj.
1.當(dāng)...時(shí)
John got engaged to her when travelling last winter.
Don't get excited when you talk.
2.既然,考慮到
How can he get the promotion when his boss dislikes him?
3.雖然,然而
I had only fifteen dollars on me when the book I wanted cost twenty.
4.在那時(shí),然后
三,代詞 pron.
1.什么時(shí)候,那時(shí)
Since when has she taught here?
四,名詞 n.
1.(事件發(fā)生的)時(shí)間[the S]
what time:
什么時(shí)間 問(wèn)具體時(shí)間,如幾點(diǎn)鐘
例:What time is it now?
What time is suitable for us to meet?
\x08望樓主采納.