“一定”造句
最幸福的人们并不
一定什么都是最好，只是他们懂得欣赏生活的美好。
The happiest are not those who own all the best things, but those who can appreciate the beauty of life.
你
一定注意到他有时候显得特别疲惫。
You must have noticed how tired he sometimes looks.
“这么说，他的记忆
一定是完全恢复了？”——“差不多。”
"His memory must be completely back, then?" — "Just about."