將來(lái)完成時(shí)主要用法歸納

1. 表示將來(lái)完成

即表示到將來(lái)某個(gè)時(shí)間爲(wèi)止勢(shì)必會(huì)完成或預(yù)計(jì)要完成的動(dòng)作。如：

Maybe by then you will have changed your mind. 也許到時(shí)候你已經(jīng)改變主意了。

“You'll have finished by tomorrow.” “I wish!” “你到明天就完成了。”“但願(yuàn)如此! ”

I hope I'll have finished the work by the end of the month. 我希望我這個(gè)月底能完成工作。

Demand for cars in the developed world will have reached saturation point within 20 years. 不出20年，已發(fā)展國(guó)家的汽車需求將達(dá)到飽和。

Planning so far ahead makes no sense—so many things will have changed by next year. 提前這麼久就計(jì)劃竝不明智——到明年，許多事情都會(huì)發(fā)生變化。

2. 表示動(dòng)詞的持續(xù)

即表示某種狀況將一直持續(xù)到說(shuō)話人所提及某一將來(lái)時(shí)間。如：

We will have been married a year on June 25th 到6月25日我們倆結(jié)婚就滿1年了。

By this time next week, I will have worked for this company for 24 years. 到下星期此刻，我已經(jīng)爲(wèi)該公司乾了24年了。

3. 表示推測(cè)

即表示根據(jù)某情況作出的推測(cè)。如：

That will have been Roland. He said he'd be back at 7. 準(zhǔn)是羅蘭，他說(shuō)他7點(diǎn)鍾廻來(lái)。

There will have been a definite result before Friday. 星期五以前將肯定會(huì)有結(jié)果。