她每天都要到井里汲水 She has to collect water from the well every day .为什么加has to ?

问题描述:

她每天都要到井里汲水 She has to collect water from the well every day .为什么加has to ?

表示客观所逼.
have to do sth.不得不.如果不用has to 直接写collectswater行不?可以但语气就没那么强