英语中的 when 和 while 是两个常用的连词,它们都表示时间的概念。但是它们后面需要跟什么样的词语或句子呢?下面我们来详细了解一下。
When
当我们用 when 连接两个句子时,通常是用来表示“当……时候”的意思。具体来说,when 后面可以跟以下几种词语或句子:
1. 时间点
- When I woke up this morning, it was snowing outside.
- I will call you back when I finish my work.
2. 从句
- I always feel happy when I see her smile.
- When it rains, I like to stay at home and read books.
3. 现在分词
- When walking in the park, I saw an old friend.
- When speaking English, you should pay attention to your pronunciation.
While
而当我们用 while 连接两个句子时,通常是用来表示“在……期间”的意思。具体来说,while 后面可以跟以下几种词语或句子:
1. 动词-ing 形式
- I like to listen to music while cooking.
- She always watches TV while exercising.
2. 从句
- While I was studying, my roommate was playing games.
- He is always on his phone while he is eating.
3. 名词
- While on vacation, I visited many museums.
- I like to listen to the radio while driving.
总之,当我们在英语中用 when 和 while 连接两个句子时,需要根据具体语境来选择合适的词语或句子。希望本文可以对大家学习英语有所帮助。