精选优质文档-倾情为你奉上一般过去时，现在完成时和过去完成时 一般过去时态表示过去某个时间发生的动作或存在的状态，常和表示过去的时间状语连用，也表示过去经常或反复发生的动作，常和表示频度的时间状语连用，试看下列例句： 1. I was in the classroom yesterday morning2. My father was at work last week.3. I visited the Palace Museum three weeks ago.4. He always went to work by bus last year.5. I wrote home once a week at college.1. yesterday或以其构成的短语：yesterday morning(afternoon, evening)等；2. 由last+一时间名词构成的短语：last night, last year (winter, month, week)等；3. 由时间段+ago构成的短语：a mom
