father's love is like a mountain 可以吧?前面加个“the”就行了
用as as 的话
The love of a father is as [strong] as a mountain
The love of a father is as [great] as a mountain
很强壮?很伟大?或者自己可以添东西进去,但是就是算“添油加醋”了吧,会偏离原句一点...