精选优质文档-倾情为你奉上动词的时态一、根据时间状语确定时态的原则1. Hurry up! The play for ten minutes. (2010辽宁) A. has begun B. had begun C. has been on D. began 析 1. C。since后接时间的起点,for后接时间段,主句动词用现在完成时,应注意瞬间动词与延续性动词的使用。二、在复合句根据时态呼应确定时态的原则2. Do you know if back next week? If he back, please let me know. (2010黑龙江 ) A. he comes; will come B. will he come; comes C. he will come; comes D. will he come; will come 析 2. C。if既可引导宾语从句,也可引导状语从句。