first.的意思是首先.例如,在演讲前,First,I'd like to introduce myself.
at first,也有首先的意思,At first,let's talk about the food.
first of all 的意思是,在所有的之前.
first.的意思是首先.例如,在演讲前,First,I'd like to introduce myself.
at first,也有首先的意思,At first,let's talk about the food.
first of all 的意思是,在所有的之前.