Перевести на . 1. если долго смотреть телевизор, то это может плохо влиять на зрение 2. не смотрите телевизор весь день и тогда он не будет плохо влиять на ваше здоровье
1) If you watch TV for a long time it may affect your vision (eyesight) badly. (If you watch TV for a long time it can have (cause) bad effect on your vision) 2) Never watch TV all day long and then it won't influence your health badly. (Do not watch TV all day long, then it won't do your health any harm)
(If you watch TV for a long time it can have (cause) bad effect on your vision)
2) Never watch TV all day long and then it won't influence your health badly.
(Do not watch TV all day long, then it won't do your health any harm)