Optional attribute
[计] 任选属性
🧩 词语组成解析
🗣️ 情景例句
I'll call you again later, OK?
我以后再打给你，好吗？
I wrote 9 books.
我写了九本书。
When they were very young, Mr. Green sometimes dressed up in a red coat. But he doesn't do that now.
在他们很小时，有时候格林先生穿上一件红色的外套。但他现在不那么做了。