Question

he never do something ，he always see the worker work。对吗

Answer 1

很明显不对哈。
1.否定词（这里的never）后面接anything
2.两个句子不能直接用逗号连接.
3.see sb doing 而不是see sb do.
4.加上just 使意思表达的更清楚。
5.第三人称单数。

正确的可以是：
he never does anything. He just sees the worker doing.

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Answer 2

不知道什么意思，不过如果是一般现在时，应该用does，sees，works ，但后一句，sees works一句话就有两个动词，肯定不对，你要表达什么意思呢

Answer 3

不对。他是单数第三人称。
he never does something ，and he always sees the worker work

Answer 4

不对，第三人称如果是一般时动词应该用单数形式。
never 表否定含义，应接anything
应为：He never does anything; he always sees the worker work.

Answer 5

不对
He never does anything, he just watches the worker doing his job all the time.
do 是及物动词，后面得加所涉及的物
ever 是否定词，something 应该换成anything
he 是单数，谓语动词应该用单三does
see常表示看到..., 换成watch比较好