leave finger to help sb

leave finger to help sb To sb 's finger tips to waggle a finger under sb’s help sb. (to) do help sb.to do 有leave sb to do 是leave sth.to sb.还是leave sth.for sb. leave sb doing /leave sb to do /leave sb to be done help sb do sth help sb doing sth help sb to do sth help sb w “leave”+sb doing 还是“leave”+sb to do 还是“leave”+sb do 为什么用哪一种? help sb.to one's turn to sb for help