`1.` I like watching Korean dramas in my freetime

`-` Cấu trúc: love + V-ing = like + V-ing = thích/yêu quý thứ gì

`2.` Susan is interested in watching movies at home

`-` Cấu trúc: like + V-ing = be interested in V-ing 

`3.` She hasn't come back to her hometown for 4 years 

`-` Câu ở HTHT: S + have/has + Vp.p + ...

*for + khoảng thời gian 

`1`.  I like watching Korean dramas in my freetime

`→` Love + Ving `=` Like + Ving

`2`. Susan is keen on watching movies at home

`→` Like + Ving `=` Tobe keen on + Ving

`→` Có thể thay keen on `=` interested in 

`3`. She hasn't come back to her hometown for 4 years 

`→` The last time + S + $V_{ed/3}$ + was + time + ago

`=` S + have / has not + $V_{ed/3}$ + for + time

`@thew`