D祈使句的反义疑问句：(1)在肯定的祈使句后,为了使祈使句听起来比较婉转,客气,可加一个简短的问句,如：will you would you?can you?最常用的的是：will you?或won't you?例：Speak louder ,will you?请大声点,好吗?R...