when he finished his homework英语提问?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/07/20 01:41:13

when he finished his homework英语提问?
when he finished his homework,he decided to play games on the computer.
转换成
Hvaing finished his homework,he decided to play games on the computer.
请问：这种转换的关系原则是什么?还有,为什么when he finished转换后,是having finished.也就是说,having变成名词,而后面是过去分词的谓语?而his homework不是名词吗?
还有个问题（原句中得从句转换成独立结构之后就是按照固定的结构来变换吗?或者有什么原因,为什么是名词加过去分词,这种形式,意思发生了什么变化才导致发生这样的形式变化吗?这种形式代表了什么,它的意义,以及这种变换方式的原因.）
分早送光了,抱歉..

finished his homework发生在play games 之前,这种时间关系有when（=at that time）引导的时候很清楚.转换成独立结构后,因为没有了when这个表时间关系的连词,主句和独立成分只有通过本身动词时态的形式差异彰显时间关系,所以就有了完成时和过去时的落差.原句when后面为什么不是过去完成时呢?问题就出在when的特殊性上,when=at that time,是一个时间点,不具备完成时要求的持续过程,故此不用完成时.转换成独立结构后,when的时间状态的特殊性所造成的限制解除了,“finish”理所当然地成为一种持续的既成事实,获得了以完成时表达的自由和权力.

when he finished his homework英语提问? He has finished his homework when his mom went home. he finished his homework _____. He___until he finished his homework? When he finished his homework,my sister finished hers,too.(同 Only when he has finished his homework he is able to play ,如 he went home ( ) he had finished his homework.A.when B.while As soon as he finished his homework He just finished his homework.反义句 Has he finished his homework怎么回答 soon he finished ( )(do)his homework He has finished his homework.被动语态