词汇

grammar_british-grammar_future-perfect-continuous-i-will-have-been-working-here-ten-years

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	have been working
−	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	have been working
? +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.