10a
1.do->did (last night là dấu hiệu thì QKĐ: Did + S + V_inf?)
2.went->go (yesterday là dấu hiệu thì QKĐ.Câu phủ định: S + didn't + V_inf)
hoặc "didn't->bỏ (câu khẳng định: S + V_ed +...)
3.to->from (receive.....from : nhận cái gì từ )
4.year last->last year (không có "year last")
10b
Động từ Hiện tại đơn ngôi 3 số ít Hiện tại tiếp diễn Quá khứ đơn
Study Studies Studying Studied
Teach Teaches Teaching Taught
Become Becomes Becoming Became
Go Goes Going Went
Talk Talks Talking Talked
Tell Tells Telling Told
Eat Eats Eating Ate
Travel Travels Travelling Travelled
Do Does Doing Did
Walk Walks Walking Walked
Have Has Having Had