Unit 18单元课文难点讲解

第69课重点例句及相关知识的分析　　
1. Well, first I was so busy reading a novel that I forgot to look at the time.
　　句中be busy dong sth是"忙于做某事"，而be busy with sth 则是"忙于某事"的意思。forget的过去式为forgot，过去分词为forgotten，其后的宾语可以由不定式充当，也可以由动词的-ing形式来充当，但两者的意思是有区别的。forget to do sth是"忘记做某事"，此事还未做；forget doing sth是"忘记了做过某事"，此事已做过。