1你喜欢喝茶吗，为什么？2我很喜欢喝热茶，一天要喝好几次。3我喜欢喝红茶，它很好喝。4我喜欢边看电影边喝茶，也喜欢边看书边喝茶。5茶不仅好喝，而且对身体也很好。 1. "为什么" is a following question of "你喜欢喝茶吗" , so they can be written in on sentence. 2. We don't usually put "很多次" at the last of a sentence. "每天喝很多次茶" would sound better. "一天要喝好几次" sounds even more natural. 4. In original two sentence, you were describing things you like to do when drinking tea. They have the same purpose. So put the in one sentence would be more natural and efficient. 5. You can't drink(喝)/taste "drinking(喝) tea(茶)". So it's "tea(茶) not only(不仅) tastes well(好喝)" instead of "drinking tea(喝茶) not only(不仅) tastes well(好喝)"

一般说“茶不仅好喝，而且非常健康。”不会说“喝茶不仅好喝”

每天喝很多次茶。这个比较官方。但是喝茶很多次也能被人理解。如果考试那就喝很多次茶，如果平时交流都可以