✅ 同义词
🗣️ 情景例句
Sam, this is Susan. Sam
我是Susan。
He is now out of touch with his old friends.
他现在已经没有和他过去的朋友联系了。
No problem! Tell me, do I have to take them before or after meals?
“那不难！告诉我，我是在饭前还是饭后吃呢？”