leech could not finish it without me to help him.后面半句条件状语为什么用to help而不是helping

leech could not finish it without me to help him.后面半句条件状语为什么用to help而不是helping could not could not I could not bear I could not catch could not have done could not find object could not skate at Could not find process Publishing failed Could not 谁知道could not have could not connect是什么意思 could not resolve I could not forget I could not forget could not open display could not open display Could not read date from i could not get it could not的缩写是什么?