not only...but also...不仅..而且
be folded into...被折叠成...
leave a bad impression on...留下一个不好的印象
A: Betty, I will be having dinner with one of my American clients tomorrow night. But I don't know anything about their table manners. Can you tell me something about it?
B: Sure. First, take the napkin for example. You have to wait for the lady to put it on your laps. Napkins not only should be placed on the legs, but also should be folded into strips or triangles. If you want to go to the bathroom, just put the napkins on your chair.
A: What about the spoon?
B: After drinking the soup, you should not put the spoon in a bowl, but put it on the plate. In addition, you must never blow the soup with your mouth. If you want to put sugar in your coffee or milk tea, put the sugar in the spoon first and then put it in a cup instead of using your hand directly.
A: OK. I know.
B: It is also important that you do not use toothpicks after your meal. Otherwise, it will leave a bad impression on him.
A: Alright. What should I pay attention to before dinner?
B: You can't put your hands on the table, you should put them on your knees.
A: Understand, I'll remember it.