1 would like+to_inf( thích làm vc gì đó): to tell

2Có since cộng mốc thgian ta sẽ dùng thì HTHT haven't seen

3 have you known> chỉ sự kéo dài của sự vc từ thời điểm QK>HT

4  Burnt, was cooking vì có từ when theo công thức tổng quát là QKĐ..................when.............QKTD

5 were crossing, shouted> while chỉ sự vc đang diễn ra trong thdiem đó

Học tốt!!!

1 to tell

-> ta có cấu trúc would like + to V

2 haven't seen

-> thì HTHT + since : s + have / has + VPII + since + 1 mốc thời gian

-> dấu hiệu nhận bt trong câu : since last week

3 have you known

-> thì HTHT+ how long : how long + have / has + S + VPII + S2 

4 burnt - was cooking

-> thì QKTD : s + was / were + V-ing

5 were crossed -- shouted

-> -> thì QKTD : s + was / were + V-ing

-> dấu hiệu : while