must have been doing（意思翻译）

一定在做什么

must have been doing（相似词语短语）

1、have been───已经；一直；去过（现在完成时）

2、have been on───已经开始了

3、have been in───呆在某个地方；去过某个地方

4、have been dead───已经死了

5、have you been───你有没有

6、has been doing───到现在为止一直进行（现在完成进行时）

7、have been to───v.曾经到过（去过）

8、l have been───我一直

9、have been there───亲眼看到；直接了解；全都知道；曾到过那里；全都知道， 直接了解， 亲眼看到

must have been doing（双语使用场景）

1、Hey, you must have been doing 125 to keep up with me, good job.───你肯定开到了每小时125英里才赶上我，干得不错。

2、Someone, other than Lady Luck, must have been doing something right.───除了幸运女神外，一定有些人一直在做些正确的事。

3、He must have been doing experiments in the laboratory.───他一定是在实验室里做实验。

4、Corporate Japan must have been doing something right after all.───日本公司毕竟在此之后曾确有所为。

5、John must have been playing football and Mary must have been doing her homework.───约翰肯定一直在踢足球，而玛丽想必一直在做作业。

6、John must have been playing football and Mary (must have been) doing her homework.───约翰一定在踢球，而玛丽一定在做作业。

7、Tom must have been playing basketball and Mary (must have been)doing her homework.───汤姆肯定一直在打篮球，玛骊一直在写作业

8、The car must have been doing at least 100 miles an hour.───这车速肯定每小时至少100英里。

must have been doing（英语使用场景）

1、The motorcyclist must have been doing a ton as he passed me.

2、The car must have been doing at least 100 miles an hour.

3、He estimated that the car must have been doing at least 18 miles per hour on the curve where it overturned.

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