`1`.When did you start your hobby ?

`\rightarrow` Thì QKĐ ( NV ) : Did + S + V ?

`\rightarrow` When dùng để hỏi về mốc thời gian

`2`.So far , we have asked people to donate books and clothes to the poor children

`\rightarrow` Thì HTHT : S + have / has + VpII

`\rightarrow` `DHNB` : So far

`\rightarrow` donate sth + to do sth : Ủng hộ cái gì cho ai

`3`.I think in the future , people will take up more outdoor activities

`\rightarrow` Thì TLĐ : S + will + V

`\rightarrow` `DHNB` : in the future

`\rightarrow` think + Clause ( TLĐ ) : Nghĩ ai sẽ làm gì

`4`.My best friend doesn't like mountain climbing because he is afraid of heights

`\rightarrow` Thì HTĐ :

`-` ĐT Tobe : S + is / am / are + adj / n

`-` ĐT Thường ( PĐ ) : S + don't / doesn't + V

`\rightarrow` Don't / Doesn't + like + V-ing : Không thích làm gì

`\text{# TF}`

`1`. When did you start your hobby`?`

`-` Cấu trúc: When+ did+ S+ V+...`?`

`-` one's+ N

`2`. So far, we have asked many people to donate books and clothes to the the poor children.

`-` so far: dấu hiệu thì HTHT ( đứng đầu câu, mà so far là trạng từ `=>` sau nó dùng dấu phẩy)

`-` Câu khẳng định ( thì HTHT): S+ have/ has+ Vpp

`-` ask+ sb+ to V: yêu cầu ai làm gì

`-` donate+ sth+ to+ sb: quyên góp cái gì cho ai

`3`. I think in the future, people will take up more outdoor activities.

`-` Cấu trúc: S+ think+ S+ will/ shall+ V

`-` in the future: dấu hiệu thì TLĐ ( là trạng từ, đứng trước trước chủ ngữ `=>` sau nó dùng dấu phẩy)

`4`. My best friend doesn't like mountain climbing because he is afraid of heights.

`-` Thì HTĐ diễn tả sở thích

`-` Câu phủ định ( thì HTĐ): S+ do/ does+ not+ V

`-` Kết quả+ because+ nguyên nhân

`-` be+ afraid+ of+ sth: sợ thứ gì