the house is too old for us to live in."in"是个“尾巴介词”.
问题描述：
the house is too old for us to live in."in"是个“尾巴介词”.
“尾巴介词”什么时候该要,什么时候不该要?
答
“尾巴介词”：当to do的动词do是不及物动词时,in等尾巴介词要加在do后.这里live用作不及物动词,完整的词组是 live in the house.当to do的动词do是及物动词时,不加in等尾巴介词,例如The soup is too hot to drink.