對比記憶when和while
when和while都是表示時間的連詞，但它們在用法和含義上有所不同。when表示“當(dāng)……時候”，強調(diào)某一時間點或事件的發(fā)生；while表示“在……期間”，強調(diào)一段時間或過程的持續(xù)性。
as：側(cè)重指從句與主句的動作同時進行，謂語動詞可以是持續(xù)性的，可以是短暫性動詞。
when 什么時候
來自PIE*kwo,印歐語疑問代詞根，詞源同who,where,why,how.
中文詞源：
when 什么時候
來自PIE*kwo,印歐語疑問代詞根，詞源同who,where,why,how.
when
1、 When will the single currency be operable?
什么時候?qū)嵭袉我回泿牛?/div>
2、 She said: “I used to keep hens when I was younger and had to prepare their breakfast each morning before I went to school.
她說:“我小時候養(yǎng)過母雞，每天上學(xué)前都要為它們準(zhǔn)備早餐。[機器自動翻譯，如有錯誤，感謝糾錯]
1、 "Recognizing when a friend or colleague feels sad,angry or surprised is key to getting along with others.
當(dāng)朋友或同事感到悲傷、憤怒或驚訝時，你可以認識到這一點，這是與他人相處的關(guān)鍵。
1、 When he travels, he prefers to explore new places on his feet.
當(dāng)他旅行時，他喜歡用腳去探索新的地方。
1、 Brignull identifies 12 types of common dark patterns, ranging from misdirection and hidden costs to “roach motel,” where a user experience seems easy and intuitive at the start, but turns difficult when the user tries to get out.
Brignull指出了12種常見的黑暗模式，從誤導(dǎo)和隱藏成本到“蟑螂旅館”，在這種模式下，用戶體驗在一開始似乎簡單直觀，但當(dāng)用戶試圖離開時就變得困難了。
常見考點例句：
- That was when mr murdoch started running out of patience .
- 就是從那時起，默多克開始逐漸失去耐心。
- When will financial markets recover ?
- 金融市場何時能復(fù)蘇？
- That was when parents got involved .
- 當(dāng)學(xué)生家長開始介入時。
- Boeing officials declined to say exactly when .
- 波音高管拒絕透露具體交付時間。
- This is akin to when the industrial revolution overwhelmed the agrarian age .
- 這和當(dāng)時工業(yè)時代取代農(nóng)業(yè)時代的過程是相似的。