F-2：fall all over oneself 竭尽所能
A:Where did you go last winter vacation?
A:去年寒假你去哪儿了？
B:I visited my uncle's family.
B：我去叔叔家了。
A:Did you have a good time there?
A:你在那儿过得愉快吗？
B:Of course. Everyone in his family fell at over themselves trying to make me feel at home.
B:当然了。他家里人人都尽量让我觉得舒服。
