英语新概念一册,第128课的课后题,我不是不会,只是弄不懂题目到底是什么意思,他给你两个例句,可是到底用hasto还是用Ithinkheisprobably?原题：Writtenexercises书面练习ARewritethesesentences,using

Question

英语新概念一册,第128课的课后题,
我不是不会,只是弄不懂题目到底是什么意思,他给你两个例句,可是到底用has to还是用I think he is probably?
原题：Written exercises 书面练习
A Rewrite these sentences, using either has to or I think he is probably ...模仿例句,使用has to或I think he is probably ... 改写以下句子.
Examples：
He must be home before six o'clock.
He has to be home before six o'clock.
He must be tired.
I think he is probably tired.
1 He must be here at six o'clock.
2 He must be busy.
3 He must be at the office early tomorrow.
4 He must be sleeping.
5 He must be French.
6 He must be in France next week.
7 He must be an engineer.
B Write new sentences.

Answer 1

应该是根据题意选择运用哪一种.
如：He must be home before six o'clock.
他必须在6点钱回家.换句话讲,他不得不在六点前回家.必须的,不得不的用has to
He must be tired.他应该累了.
表示揣测的,不确定的.可以用I think he is probably...