Wǒ dé le liúgǎn.

我得了流感。

I have the flue.

Notes:

我(wǒ): I

得(dé): to get

了(le): particel word which means the action is done.

流感(liúgǎn): flue

Example:

A：你怎么了？

    Nǐ zěnmele？

    What's the matter with you?

B：我得了流感。

     Wǒ dé le liúgǎn.

     I have the flue.