“What did they do?1,What did they do?2,What must they do?下面的回答正确吗?1,They are going to have their dinner.2,They must going to have a meal.
问题描述：
“What did they do?
1,What did they do?
2,What must they do?
下面的回答正确吗?
1,They are going to have their dinner.
2,They must going to have a meal.
答
What did they do? 一般过去时，问他们（过去某个时间）干什么。
回答也要用一般过去时，也可以用一般过去进行时。
可以回答，They had their dinner./They were having their dinner.一般加一个时间状语。
What must they do? 一般现在时，他们必须做什么。
回答也用一般现在是，They must go to have a meal.
答
同上面的.
第一个时态搞错了,而第二过就有点错得离谱了.must后面接的都是动词原,不能这么用
答
他们干了什么?过去时
他们必须做什么?一般现在时
回答都有问题
They had their dinner.
They must go to have a meal
答
1. 他们（过去时间）干了什么？
2.他们（必须）得做什么？
回答1.They had their dinner.
2. They must have a meal./
They should have a meal./
They have to have a meal.