| 释义 |
Future perfect continuous (I will have been working here ten years)
Future perfect continuous: form
We use will/shall + have + been + the -ing form of the verb. We use shall only for future time reference with I and we. Shall is more formal and less common than will.
| singular and plural | | | + | I, we she, he, it, you, they | (full form) will or shall will | have been working | I, she, he, it, you, we, they | (short form) ’ll | − | I, we she, he, it, you, they | (full form) will not or shall not will not | have been working | I, we she, he, it, you, they | (short form) won’t or shan’t won’t | ? +Will ? − Won’t | I, she, he, it, you, we, they | | have been working? |
Note: Shall I, shall we and shan’t I, shan’t we in future perfect continuous questions are rare.
Future perfect continuous: use
Emphasising the length of an event at a time in the future
We use the future perfect continuous form when we are looking back to the past from a point in the future and we want to emphasise the length or duration of an activity or event: In September the head teacher will have been teaching at the school for 20 years.
In September, she will have been living in France for a year.
I will have been studying English for three years by the end of this course.
We’re late. I think they’ll have been waiting for us. We’d better go.
See also:
Future: will and shall
Shall
Will
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