SIMPLE PAST – FRESENT PERFECT CHUYỂN ĐỔI TỪ THÌ HIỆN TẠI HOÀN THÀNH SANG THÌ QUÁ KHỨ ĐƠN (VÀ NGƯỢC LẠI)
CHUYỂN ĐỔI TỪ THÌ HIỆN TẠI HOÀN THÀNH SANG
THÌ QUÁ KHỨ ĐƠN (VÀ NGƯỢC LẠI)
* Dạng 1:
S + HTHT (phủ định) + for + thời gian
It’s + thời gian ….+ since …+ last + QKĐ (khẳng định)
Ex: I haven’t seen my father for one month.
– It is one month since I last saw my father.
Tom hasn’t had his hair cut for over three months.
– It is three months since Tom last had his hair cut.
* Dạng 2:
S + HTHT (phủ định) + before
It’s + the first time + S + HTHT (khẳng định)
Ex: I haven’t seen that man here before.
– It is the first time I have met that man here.
It is the first time I have read this book.
* Dạng 3:
– S + HTHT (phủ định) + since / for + …..
– S + last + QKĐ (khẳng định) …+ when + mệnh đề
– The last time + S + QKĐ (khẳng định) + was + thời gian
Ex: I haven’t heard him since August.
I haven’t seen him since I left school.
* Dạng 4:
S + HTHT (khẳng định) + for + thời gian
– S + began / started + V-ing + thời gian + ago
Ex: I have worked here for ten years.
It started raining two days ago.
– It has rained for two days.