m4u3 tomorrow's world
学案
project
第一部分：重点讲解
1. …, the professor and his>偶遇
the man i came across on board the plane ten years ago is now my best friend.
come across sth (find) phrasal verb: to find / meet sth./sb. by chance:he came across some of his old love letters in his wife's drawer.
when your friends come over for tea, you should greet them at the door.
the song comes down to us from the 10th century.
the meaning of his speech doesn’t come out well.
i came out first in the examination.
