when用法详解四大句型
作者：马晓宇（高考志愿填报专家）
发布时间：2025-02-12 11:37:31
阅读57次
在英语学习中，掌握when的多种用法至关重要。今天，我们就来聊聊when引导的四大经典句型，帮你轻松驾驭英语表达。
1句型一：be doing sth…when…
这个句型表示“正在做某事时，突然……”。例如：“He was still smiling when the door opened and his wife came in.”（他正笑着的时候门突然开了，他妻子走了进来。）这种句型常用于描述突如其来的事件。
2句型二：be about to do sth…when…
此句型意为“正要做某事时，突然……”。如：“We were about to start when it began to rain.”（我们刚要出发，天就开始下雨了。）它常用于表达计划被打乱的情况。
3句型三：had not done sth…when…/hardly…when…
这两个句型都表示“刚……就……”。例如：“He had not fallen asleep when the telephone rang.”（他刚要入睡电话就响了。）或者“Hardly had I sat down when the phone rang.”（我刚坐下电话就响了。）它们强调动作的紧密连贯性。
为了更直观地理解这些句型，下面是一张详细列举的表格：
| 句型 | 含义 | 例句 |
|---|
| be doing sth…when… | 正在做某事时，突然…… | He was reading when the light went out. |
| be about to do sth…when… | 正要做某事时，突然…… | We were about to leave when it started raining. |
| had not done sth…when… | 刚……就…… | She had not finished her homework when her mother came home. |
| hardly…when… | 刚……就…… | Hardly had I arrived when it started to snow. |
| had just done sth…when… | 刚刚做完某事就…… | I had just fallen asleep when the noise woke me up. |
4句型四：had just done sth…when…
这个句型表示“刚刚做完某事就……”。比如：“I had just gone to bed after a very hard day when the phone rang.”（在劳累了一天之后我刚刚就寝，电话铃就响了。）它常用于描述一连串紧密相关的事件。
掌握when的这四大句型，你的英语表达将更加地道和流畅。记住，语言学习在于积累和实践，多练习才能更上一层楼哦！
阅读全文
