$\textit{Huệ Quân}$

$\textit{#chuyên anh}$

Kiến thức cần nhớ:

Thì hiện tại tiếp diễn:S+am/is/are+Ving+(O).

Thì quá khứ đơn: S+V(ed/p1)+(O).

Thì quá khứ hoàn thành: S+had+V(ed/p2)+(O).

Lời giải:

1. Is learning.

2. Sent.

3. Hadn't enjoyed.

4. Had.

5. Is revising.

Hết. Chúc bạn học tốt. Gửi bạn.

`1.` has learnt

for seven years now → HTHT (S + has/ have + V_ed/ V3)

`2.` sent

last summer holiday → QKĐ (S + V_ed/ V2)

`3.` hadn't enjoyed 

Before + S + V_ed/ V2, S + had + V_ed/ V3

`4.` had

before → QKĐ (S + V_ed/ V2)

`5.` is revising

At the moment → HTTD (S + is/ am/ are + V_ing)