热度 2|
不定式的特殊句型so as to
1) 表示目的;它的否定式是so as not to do。
Tom kept quiet about the accident so as not to lose his job. 汤姆对事故保持沉默是为了不丢掉他的工作。
Go in quietly so as not to wake the baby. 轻点进去,别惊醒了婴儿。
2) so kind as to ---劳驾
Would you be so kind as to tell me the time? 劳驾,现在几点了。
不定式的特殊句型Why not
"Why not +动词原形"表达向某人提出建议,翻译为:"为什么不……?" "干吗不……?"
例如:Why not take a holiday? 干吗不去度假?
不定式的时态和语态
时态语态 | 主动 | 被动 |
一般式 | to do | to be done |
进行式 | to be doing | |
完成式 | to have done | to have been done |
完成进行式 | to have been doing |