Question

I have many toys改为否定句

Answer 1

I have many toys 我有很多玩具，否定句为：I don't have any toys.

一般现在时否定句的结构是
主语＋don't或doesn't＋行为动词原形＋其它

而have只有作助动词表示完成形式实才可以用haven't

关于 some /any的用法，一般说来，some用于肯定句中，any用于否定句和疑问句中。

但这只是通常的情况，以下特殊情况须注意：

1、希望得到肯定回答的疑问句通常用some：
May I have some paper?

我可以拿些纸吗？

Aren't there some stamps in that drawer?

那抽屉里不是有几张邮票吗？

Didn't he give you some money?

他不是给了你一些钱吗？

2、表示请求或建议的疑问句通常用some：
Why not give her some flowers?

为什么不送她些花呢？

Would you like some bananas?

吃点香蕉吗？

Won't you have some more?

你不再要一点吗？

Shall I get some chalk for you?

要我给你拿些粉笔来吗？

3、some有时用于下面这样的否定句：
I don't like some of the films.

这些电影中有几部我不喜欢。

比较：

I do not like any of the films.

这些电影中我一部也不喜欢。

Answer 2

I have many toys改为否定句I don't have many toys.
has如果作为实义动词，那么否定疑问都需要借助于助动词do/does。就是doesn't have。
has如果在现在完成时中，那就是作为助动词，否定句就直接在后加not，就是hasn't。疑问句就把has提前。
I have a lot of things to do。
这个句子中的have就是实义动词，否定句就只能变为I don't have
She has been to Shanghai。
这个句子中has就是作为助动词，所以否定直接在has后加not，疑问句将has直接提前

Answer 3

I don't have many toys.

Answer 4

I have many toys的否定句为
I don't have many toys.