only if在句子怎么用.如这句,怎么分析.Encourage children to work out issues themselves,and to approach parents only if someone is in danger or the problem is very difficult to deal with.这里only if 怎么去理解,在句子的作用是

Question

only if在句子怎么用.如这句,怎么分析.
Encourage children to work out issues themselves,and to approach parents only if someone is in danger or the problem is very difficult to deal with.这里only if 怎么去理解,在句子的作用是什么.

Answer 1

只有当.前面讲干什么事,后面讲条件