`1`. Kim practices listening by watching English cartoons on TV.

`->` HTĐ: S + V(-s/es)

`->` practice + V-ing: luyện tập làm gì

`->` by + V-ing: bởi, bằng cách

`2`. Lan learns to write by writing emails to her friends.

`->` learn + to-V: học làm gì

`->` write to sb: viết cho ai

`3`. Hoa learns English because she wants to become an English teacher.

`->` learn + N: học cái gì

`->` S + V + because + S + V: ... bởi vì ...

`->` S + want + to-V: muốn làm gì

`4`. Tuan learns to read by reading English stories.

`->` HTĐ: S + V(-s/es)

Công thức thì HTĐ (V: thường)

S số ít, he, she, it 

(+) S + Vs/es

(-) S+ doesn't + V1 

(?) Does +S +V1?

S số nhiều, I, you, we, they

(+) S + V1 

(-) S+ don't + V1 

(?) Do + S+ V1? 

DHNB: always, usually, sometimes, often, never, seldom,....

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1. Kim practices listening by watching English cartoons on TV.

practice + Ving: luyện tập

2. Lan learns to write by writing emails to her friends.

learn + to V: học 

write sth to sb: viết gì cho ai

3. Hoa learns English because she wants to become an English teacher.

clause + because + clause: bởi vì 

want + to V / N: muốn

a/an + N số ít 

4. Tuan learns to read by reading English stories.

`color{orange}{~LeAiFuRuiHuiBao~}`