用所给词的适当形式填空:We divide the birthday cake by-----(cut)it into 6 pieces

问题描述:

用所给词的适当形式填空:We divide the birthday cake by-----(cut)it into 6 pieces

by 为介词,所以应该填cutting
We divide the birthday cake by cutting (cut)it into 6 pieces.

cutting by是介词 通过的意思 介词后面加动词的话 必须是动名词形式

cutting by 是介词 后面要用 ing 形式