（英语）这句话对不对1.as a mother,she [has to have] the burden to bring her son up.2.once i [have] a stormy argument with him.括号部分
问题描述：
（英语）这句话对不对
1.as a mother,she [has to have] the burden to bring her son up.
2.once i [have] a stormy argument with him.
括号部分
答
1，用bear the burden of 更好。语法没问题
2.had 。once是表过去式的时间状语
答
1.has to 改must ，have to客观，must主观，一般用于现在时，而前者有更多时态
2.have改had once 曾经，表过去
答
有点问题,改为：
1.as a mother,she has to bear the burden to bring her son up.
2.once i had a stormy argument with him.
答
had 是过去时