clean my room(打扫房间)——cleaned my room(clean的过去式)
wash my clothes(洗衣服)——washed my clothes(wash的过去式)
stay at home(待在家里)——stayed at home(stay的过去式)
read a book(读书)——read a book(read的过去式)
see a film(看电影)——saw a film(see的过去式)
have a cold(感冒)——had a cold(have/has的过去式)
sleep(睡觉)——slept(sleep的过去式)
过去式时间状语:last weekend(上周末)、last night(昨晚)last Monday(上星期一)、yesterday(昨天)the day before yesterday(前天)