when是一個(gè)疑問(wèn)副詞,意為：什么時(shí)候,何時(shí),引出一個(gè)特殊疑問(wèn)句.when可以對(duì)年、月、日以及時(shí)刻進(jìn)行提問(wèn)或者詢(xún)問(wèn)某一動(dòng)作發(fā)生的時(shí)間,回答時(shí)常用介詞at,in,on等組成的表時(shí)間的介詞短語(yǔ).
－When will your parents come to see you?
你父母什么時(shí)候來(lái)看你?
還可用what time就時(shí)間進(jìn)行提問(wèn),what time更強(qiáng)調(diào)“幾點(diǎn)”.如：
－What time is it?
－It’s six o’clock.
現(xiàn)在幾點(diǎn)鐘?六點(diǎn)鐘.
注意when和what time的區(qū)別在于what time問(wèn)具體的時(shí)間,如某一天的幾點(diǎn)鐘,甚至幾分鐘,而when問(wèn)的時(shí)間比較籠統(tǒng).因此在問(wèn)生日日期時(shí),不要用“what time”這個(gè)特殊疑問(wèn)詞而應(yīng)該用when.