With homework to do on Saturday and sunday,students can not find any time to play games这句话为什么要用with,with引导的句子 在此做什么成分?此处能用bacause of 为什么

With的复合结构~With或Without +名词/代词 +动词不定式~在句中表状态或说明背景情况~该结构常做伴随、方式、原因、条件等状语～在这句话里面,With的复合结构表原因状语(成分),如果想改其他连词的话句子需要有改动,因为Because of 后面要加名词形式的东西而且不能接句子.比如.Students can't find any time to play games because they have to do homework on Sat.& Sun.如果有不明白的可以问我～