has和have意思为“吃”时、怎么用 ？eat 、eats怎么用？ 区别在于什么？

Answer 1

have、eat都作“吃”解,但在用法上却略有区别。
have作“吃”解时多用于“吃饭”，当主语是第三人称单数一般现在时肯定句中用has：
(+ n.) to take, to do something
We'll have noodles instead of rice for lunch today.
今天中午吃面条，不吃米饭。
Do you have tea or coffee in the morning?
你早上喝茶还是喝咖啡？
What will you have for lunch?
午饭你想吃什么？

eat作“吃”解,多用于吃水果、鱼、肉等,当主语是第三人称单数一般现在时肯定句中用eats：
eat an apple(吃苹果)
当吃饭讲的时候是不及物动词
We should eat to live and not live to eat.
我们应当为活着而吃饭，不应为吃饭而活着。

Answer 2

has和have与eat he eats只是用于一般现在时，主语不同，例如：
He has lunch at school
We have lunch at home
She eats a piece of cake every day
They eat vegetables every day

Answer 3

have一般在主语是I,you或主语是复数的时候用，而has在主语是he,she的时候用，但have和has的意思是相同的