Every day he starts work at 8:00am and finishes work at 4:30pm。和
Every day he starts working 8:00am and finishes working 4:30pm.
这两句对吗？是不是都可以？我用word来检查语法错误都没有出现绿色下划线。但我觉得word检查好像不准，有的象第三人称单数在句子中间的时候就检查不出来。
麻烦高手解答，谢谢！

begin / start to do sth
begin / start doing sth.

1) 谈及一项长期活动或开始一种习惯时，使用doing.
How old were you when you first started playing the piano?
你几岁时开始弹钢琴？
2) begin, start用进行时时，后面动词用不定式to do
I was beginning to get angry。
我开始生起气来。
3) 在attempt, intend, begin, start 后接know, understand, realize这类动词时，常用不定式to do。
I begin to understand the truth。
我开始明白真相。
4) 物作主语时
It began to melt.



正确句子为：
Every day he starts working at 8:00am and finishes working at 4:30pm。