`1.` I enjoy playing sports because it is good for my health.
- enjoy + V-ing
`2.` Do your children go camping every summer holiday?
- Thì HTD - DHNB: every summer holiday
- Do/Does + S + V-inf + ...
`3.` I think photography can be an expensive hobby.
- I think + S + V (Clause)
`4.` My cousin will give me a book as a gift on my next birthday.
- Thì TLD
- DHNB: next birthday
`5.` He finds mountain climbing dangerous so he doesn't take it.
- S + find + sth/ doing sth + adj
`6.` I hope in the future he will teach me how to do eggshell carving.
- Thì TLD - DHNB: in the future (trong tương lai)