`1.` They have collected many things so far.

`-` so far là dấu hiệu chia thì HTHT : S + have/has + P2 + ....

`-` Chủ ngữ "they" chia V số nhiều

`2.` My parents do not like mountain climbing because they think it is dangerous.

`-` Phủ định : S + don't/doesn't + V .......

`-` because + MĐ nguyên nhân : bởi vì

`-` Chủ ngữ "My parents" chia V số nhiều

`3.` We have already asked people to donate books and clothes to children.

`-` already là dấu hiệu chia thì HTHT : S + have/has + P2 + ....

`-` ask sb + to V-inf : bảo ai làm gì

`-` donate sth to sb : quyên góp ...

`4.` Thu does not like eating junk food because it is not good for her health.

`-` Phủ định : S + don't/doesn't + V .......

`-` not like + V-ing : không thích làm gì

`-` good for one's health : tốt cho sức khỏe của ....

`5.` She did not go to work yesterday because she had a bad cold.

`-` yesterday là dấu hiệu chia thì QKĐ : S + V2/ed + ....

`-` go to work (phr) : đi làm 

`-` because + MĐ nguyên nhân : bởi vì

`1`.They have collected and recycled many things so far

`->` Thì HTHT : S + have / has + VpII ( `1 , 3` )

`->` `DHNB` : so far

`->` 

`+` He , She , It + has

`+` I , You , We , They + have

`2`.My parents don't like mountain climbing because they think it is dangerous

`->` Thì HTĐ ( PĐ ) : S + don't / doesn't + V

`->` Like + V-ing : Thích làm gì ( `2 , 4` )

`->` Because + C1 + C2 : Bởi vì ( `2 , 4 , 5` )

`=>` Dùng để chỉ về nguyên nhân

`->` think sth + is + Adj ( -ing ) : Nghĩ như nào

`3`.We have already asked people to donate books and clothes for children

`->` asked sb + ( not ) to do sth : Nhờ ai làm gì

`->` donate sth + for sb : Ủng hộ cho ai

`4`.Thu doesn't like eating junk food because it isn't good for her health

`->` Thì HTĐ ( PĐ ) : S + don't / doesn't + V

`->` Thì HTĐ ( ĐT Tobe - PĐ ) : S + isn't / 'm not / aren't + adj / n

`=>`

`+` I + 'm not

`+` He , She , It + isn't

`+` You , We , They + aren't

`5`.She didn't go to work yesterday because she had a bad cold

`->` Thì QKĐ :

`+` KĐ : S + Ved / V2

`+` PĐ : S + didn't + V

`=>` `DHNB` : yesterday

`\text{# TF}`