现在完成时课内练
一、短暂性动词转换为延续性动词或者表示可以延续的状态的短语。
arrive at / in sp / get to / reach sp / come / go / move to sp
→be in sp / at school / at home / on the farm / be here / be there
He came out two years ago.He ______________ for ____________.
We return to Beijing yesterday.We ___ ____________ to Beijing since __________.
③become
→beI became a teacher in 2000. I ________________ a teacher for _________________.
The river became dirty last year. The river _______ _______ dirty for _______ ________.
④close
→b ...