I was having a hard time ____ it until he came hereto find可以吗?若不行_英语解答

I was having a hard time ____ it until he came here
to find可以吗?若不行请分析一下 .finding呢?

人气：451 ℃　时间：2019-08-26 06:51:03

解答

不能用to find.要用finding.
因为:have a hard time doing （做某事有困难）相当于：have trouble doing sth.而"have a hard time to do"是错误的,没有这个表达法.