用作定语
▲～+n.
He had a thoughtful look on his face.他脸上露出深思的表情。
You're a very thoughtful person.你是位很体谅别人的人。
用作表语
▲S+be+～
Why are you so quiet and thoughtful today?今天你为什么一言不发,心事重重?
▲S+be+～+prep.-phrase
She is thoughtful for her friends.她很体贴她的朋友们。
You should be more thoughtful of your safety.你应该更注意你的安全。
▲It is/was+～+(of sb+) to-v
It was thoughtful of you to send me the gift.谢谢你这么体贴送我礼物。
