因为它们很健康用英语怎么说

"因为它们很健康"用英语可以说成"because they are very healthy"。

"because"是英语中的连词，意思是"因为"。

"they"是英语中的代词，意思是"它们"。

"are"是英语中的助动词，意思是"是"。

"very"是英语中的副词，意思是"非常"。

"healthy"是英语中的形容词，意思是"健康的"。

例句：

I eat fruits and vegetables every day because they are very healthy.
(我每天都吃水果和蔬菜，因为它们非常健康。)
I choose to walk instead of taking the bus because it is healthy.
(我选择步行而不是坐公交车，因为这样健康。)
I try to stay away from fast food because it's not healthy.
(我尽量远离快餐，因为它不健康。)