The exercise are not as difficult as I thought

The students don't write as many papers as last year

The paper mill puts as more product as two years ago

So sánh bằng dùng để so sánh 2 người, 2 vật, 2 việc, 2 nhóm đối tượng cùng tính chất.

Được thành lập bằng cách thêm “as” vào trước, sau tính từ hoặc trạng từ.

(+) S + to be/ V + as + adj/ adv + as + (S + tobe/ V) + O

(-) S + to be/ V + not + as + adj/ adv + as + O

$15.$ The exercise are not as difficult as I thought$.$

$16.$ The students don't write as many papers as last year$.$

$17.$ The paper mill puts as more product as two years ago$.$

So sánh ( không ) bằng với $as$ `:`

`(+)` S1 `+` Be `/` V `+` as `+` adj `/` adv `+` as `+` S2 `+` O.

`(-)` S1 `+` Be `/` V `+` not `+` as `+` adj `/` adv `+` as `+` S2 `+` O.