It's only when something gets lost that you can realize ________(他对你多莫重要）．（how)

It's only when something gets lost that you can realize ________(他对你多莫重要）．（how)
It's only when something gets lost that you can realize ________(他对你多莫重要）．（how)

It's only when something gets lost that you can realize ________(他对你多莫重要）．（how)
how important it is to you.
只有当某东西失去时,你才能认识到它对你多么重要.