Chia động từ trong ngoặc:
1,She (ask)________ me the same question three times since yesterday.
2,Nam (read)________ when I saw him
3,________ you ________( be ) free next Sunday morning, Mai?
– No. I ________( visit) our grandmother.
4.He (work)________ as a research and development chemist for 10 years, then he retired.
1.She (ask) has asked me the same question three times since yesterday. (since , yesterday)
2.Nam (read) was reading when I saw him ( Việc nhìn thấy anh ấy đọc sách : QKD;Hành động đọc xảy ra tiếp diễn trong QK – dùng QK tiếp diễn )
3. Will you be ( be ) free next Sunday morning, Mai? ( TLD – Next Sunday moring – Câu hỏi đảo wil lên đầu )
– No. I will ( visit) our grandmother. ( TLD – V giữ nguyên )
He (work) has worked as a research and development chemist for 10 years, then he retired.
( for, HTHT )
`=>`
1 . has asked
2 . read
3 . Will you be fre next Sundy mornin , Mai ?
– No , I will visit our grandmother
4 . has worked
Giải thích :
1 . Key word : since `->` Thì hiện tại hoàn thành .
2 . Vế đằng sau : When là QKĐ `->` Vế trước chia QKĐ
3 . Key word : Next Sunday `->` Tương lai đơn
4 . Key word : For `->` Hiện tại hoàn thành