Shopping online is so popular that many people can't help trying to buy something because of the cheaper price.I think so.But people who use credit card (to buy)/(buying) things online should be careful.people can't help trying to buy something because of the cheaper price.的意思,还有告知我括号内为什么要选择(to buy)而不选择(buying) ,请将理由说的充分些,
问题描述：
Shopping online is so popular that many people can't help trying to buy something because of the cheaper price.
I think so.But people who use credit card (to buy)/(buying) things online should be careful.
people can't help trying to buy something because of the cheaper price.的意思,还有告知我括号内为什么要选择(to buy)而不选择(buying) ,请将理由说的充分些,
答
所以许多人都抵挡不住网上购物因为价格低廉。
use to do something所用to buy, 不用buying
can't help doing something是个特殊的用法，不能用做can't help to do something
答
trying to DO
因为价格低廉，很多人忍不住要去买
答
can' t help doing是一个固定短语,意思是“情不自禁地做…”,这句话的意思是“许多人都情不自禁地尝试购买东西因为它那便宜的价格”.
用to use有表示目的的意思,即“去用”,用using就不是很好,体现不出这个意思了.