as/ when/ while (1)as 是連詞.意思是"當(dāng)--的時候.一面--一面".(強(qiáng)調(diào)同時.一般連續(xù)時間不長).如: As we were talking about Titanic, our teacher came in. 正當(dāng)我們談?wù)?quot;泰坦尼克號"這部電影時.教師進(jìn)來了. The students sing as they go along. 學(xué)生們邊走邊唱. (2)When和as一樣都是連詞.注意它們的不同.如when"當(dāng)--的時候"(一般表示動作緊接著發(fā)生), "那時"(等立連詞.前有逗號分開) I stayed till sunset, when it began to rain. 我一直呆到太陽下山.那時天開始下雨了. (3)while是"當(dāng)--時候,和--同時"(強(qiáng)調(diào)同時發(fā)生.一般連續(xù)時間較長) While I was watching TV, he was reading. 當(dāng)我在看電視的時候.他正在看書. While there is life, there is hope. 有生命就有希望. 【查看更多】
