`1.` My mom got to be the best cook in the world.

`-` get to be sb/sth: trở thành 

`-` Bất quy tắc : Good/better/the best

`2.` These bags are heavier than those ones.

`-` So sánh hơn ( tính từ ngắn ) : S1 + V + adj-er + than + S2

`3.` Is he better at English than his sister?

`-` tobe good at sth/V-ing : giỏi về điều gì

`-` Bất quy tắc : Good/better/the best

`4.` They aren't richer than us.

`-` So sánh hơn ( tính từ ngắn ) : S1 + V + adj-er + than + S2

1

.

1

.

My mom got to be the best cook in the world.

-

get to be sb/sth: trở thành

-

Bất quy tắc : Good/better/the best

2

.

2

.

These bags are heavier than those ones.

-

So sánh hơn ( tính từ ngắn ) : S1 + V + adj-er + than + S2

3

.

3

.

Is he better at English than his sister?

-

tobe good at sth/V-ing : giỏi về điều gì

-

Bất quy tắc : Good/better/the best

4

.

4

.

They aren't richer than us.

-

So sánh hơn ( tính từ ngắn ) : S1 + V + adj-er + than + S2