YOU SAID:

there are many things i can't do

INTO JAPANESE

私は行うことができない多くの事があります。

BACK INTO ENGLISH

There are many things I can't do.

INTO JAPANESE

私は行うことはできません多くの事があります。

BACK INTO ENGLISH

I do not have a lot of things.

INTO JAPANESE

多くのものがありません。

BACK INTO ENGLISH

There are many things.

INTO JAPANESE

多くのものがあります。

BACK INTO ENGLISH

There are many things.