A. 迈克昨天看电视的英文改成英文否定句。。。
Mike watched TV yesterday.
Mike didn't watch TV yesterday.
肯定句改为否定句要看句子里的谓语动词，谓语动词是实义动词的，用助动词do来辅助，由于是过去时态用did。did否定句就用didn't。
希望有助于你~~~
望采纳~~~
B. 迈克什么时候看电颢用英语
英文翻译为：
迈克什么时候看电影？
When does Mike watch a movie?
看电影
Watch movie
例句：
1、一天下午我放了学在家的时候，他邀请我去和他一起看电影。
One afternoon when I was home from school, he asked me to come to see a movie with him.
2、消费者发现，与外出看电影的花费相比，它的大片租赁价格颇具吸引力。
It rented hit movies at a price consumers found attractive relative to the price of going out to the movies.