I will come up with three approaches that useful to solve this problem.这句话对吗?

问题描述:

I will come up with three approaches that useful to solve this problem.这句话对吗?
that那里我不确定

这句话语法不对,稍微改就对了:I will come up with three approaches that are useful in solving this problem.但我建议你考虑这个更简洁的说法:I will come up with three approaches for solving this problem....