语法问题But if some students who take classes in many subjects,will feel very busy,also they hav..But if some students who take classes in many subjects,will feel very busy,also they haven't enought time to finsih such a lot of subject.这样对

语法问题But if some students who take classes in many subjects,will feel very busy,also they hav..
But if some students who take classes in many subjects,will feel very busy,also they haven't enought time to finsih such a lot of subject.这样对吗

基本正确.
But if some students who took classes in many area,will feel so busy that they don't have enough time to finish them
这样比较顺,