I am going to take part in the contest.改成一般现在时,现在进行时,过去式,现在就要.
问题描述：
I am going to take part in the contest.改成一般现在时,现在进行时,过去式,现在就要.
答
一般现在时I take part in the contest.
现在进行时I am taking part in the contest.
过去式I took part in the contest.