EX1: Cho dạng đúng của động từ ở dạng quá khứ (V2) và quá khứ phân từ (V3), dùng bảng động từ bất quy tắc nếu cần. EX2: Viết các câu sau ở thể khẳng định (+), thể phủ định (-), thể nghi vấn (?) ở thì quá khứ đơn. 1. (+) They decided to leave soon. (-) ________________________________________________________________. (?) ________________________________________________________________? 2. (+) ________________________________________________________________. (-) There were not many homeless people here ten years ago. (?) ________________________________________________________________? 3. (+) ________________________________________________________________. (-) _________________________________________________________________. (?) Did Tom’s grandfather use to be a soldier? 4. (+) My teacher started teaching here 6 years ago. (-)_________________________________________________________________. (?) _________________________________________________________________? 5. (+) Jane often went to school on foot 3 years ago. (-) _________________________________________________________________. (?) _________________________________________________________________? 6. (+) _________________________________________________________________. (-) The cat didn’t want to eat yesterday. (?) _________________________________________________________________? 7. (+) _________________________________________________________________. (-) __________________________________________________________________. (?) Did the train arrive late yesterday? 8. (+) _________________________________________________________________. (-) There wasn’t anything left in the fridge. (?) _________________________________________________________________?