考了GRE,还需要考拖福吗?

of course. TOFEL is a must if you wanna go to the States. It's not really that difficult if you have passed the GRE exam. Good Luck!
BTW，some universities also acknowledge the ILSE exam even though they are American universities. But you'll want to check it out before you take the exam.

建议考,我同寝哥们就是考完GRE然后现在正准备拖呢。