1.有无infaceof一说2.在课上有无atlesson/atthelesson在化学课上atChemistrylesson是不是可以

Question

1.有无in face of一说
2.在课上 有无at lesson/at the lesson
在化学课上at Chemistry lesson是不是可以

Answer 1

1,有in face of,意思：面临(不顾,公开反对,在...面前)
例句：You should keep calm even in face of danger.
（即使面临危险,你也应当保持镇静.）
2,没有 at lesson的用法,要用in,比如 in this lesson,you will learn about some common chemistry reactions.
同时,lesson一般做主语用 比如 :the chemistry lesson today talked about the most basic organic reaction.像你要的这种在课堂上的用法,一般用class.