题目内容：

my mother was ill,i have to stay at home中的have to
my mother was ill,i had to stay at home中的had to 改成must行不行,强调妈妈生病了,我必须在家

优质解答

可以改.但是语感变了.must用于积极的情况多些.碰到消极情况你不得不被耽误的情况要用have to,表示有义务去做同时表示客观上不得不去做.