2、when引导时间状语从句,是一般过去时;
3、couldnt为cant的过去式,表过去没有能力;
4、介词for,表一段时间;
5、a year and a half一年半。
易混知识清单一 动词后接不定式和动名词的区别
有些动词后可接不定式作宾语,也可接动名词作宾语,但意义不同,要注意区分
Stop to do sth.停下来去做某事
Stop doing sth.停止做某事
When can a mother stop worrying about her delicate vase?
When its broken.
什么时候妈妈能不再担心她精美的花瓶?
当花瓶碎了的时候。
考点:1、stop worrying about不再担心;
2、break, broke, broken分别为动词原形、过去式、过去分词。
Stop to think about it for a moment.停下来想一想。
考点:to think about it作目的状语。
Remember to do sth.记住要做某事
Remember doing sth.记得曾做过某事
The science teacher lecturing his class in biology said, Now Ill show you this frog in my pocket. He then reached
into his pocket and pulled out a chicken sandwich. He looked puzzled for a second, thought deeply, and said, Thats
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