10點！例句說明：While和When的用法！？

兩者皆是連接詞，但While含意較廣！
然而在這，也可以When來取代，即為“當...的時候”，不過還是以採用While為佳，因為While還可以有：在...同時、然而、縱使、雖然、只要等共同的意思，可以表達到較多之意涵，非When可比擬！
另外，以While置於最前面之句子，文法上前面While子句正常應以逗號來分隔才好，即While you're waiting for the new improved museum, let us tell you a little more of what might be in store for this well loved museum. 不然While子句就得移到後面，即 Let us tell you a little more of what might be in store for this well loved museum while you're waiting for the new improved museum.

謹供參考 from Naughty and Modest Henry...

2006-07-02 16:32:25 補充：
因為While有“在...同時”的意味，所以習慣上採進行式(動詞+ing)，至於現在和過去式用法皆可；而When則採簡單現在或過去式用法即可！ 但如果While也意指“當...的時候”或前述提到的各個意思時，當然也可採簡單現在或過去式之用法... 基本上，看說的人想陳述的是甚麼！ 會使用While的各位朋友，英文已進到另一層次，恭喜各位...

when的用法:
1))When V(+s) , is/am/are V+ing...
例:When I arrive the airport, they're crying.
2)) is/am/are V+ing when V(+s) ...
例:They're crying when I arrive the airport.
過去式
1))When V+ed , was/were V+ing...
例:When I arrived the airport,they were crying.
2))was/were V+ing when V+ed...
例:They were crying when I arrived the airport.
while的用法:
1))While is/am/are V+ing , V(+s)...
例:While they're crying,I arrive the airport.
2)) V(+s) while is/am/are V+ing...
例:I arrive the airport while they're crying.
過去式
1))While was/were V+ing , V+ed
例:While they were crying ,I arrived the airport.
2))V+ed while was/were V+ing
例:I arrived the airport while they were crying.

when 通常是接過去式 while 呢 後面都會+V-ing 習慣用法

2006-07-02 10:26:03 補充：
其實也不能這樣講..因為很多都是要看的 我有去找一下知識+ 我貼給你 你去看一下 會比較詳細^^http://tw.knowledge.yahoo.com/question/?qid=1306052100111