將來完成時(shí)
1) 構(gòu)成will / be going to do sth.
2) 概念
a.狀態(tài)完成：表示某事繼續(xù)到將來某一時(shí)為止一直有的狀態(tài).
b.動(dòng)作完成：表示將來某一時(shí)或另一個(gè)將來的動(dòng)作之前,已經(jīng)完成的動(dòng)作或一獲得的經(jīng)驗(yàn).
They will have been married for 20 years by then.
You will have reached Shanghai by this time tomorrow.
現(xiàn)在進(jìn)行時(shí)
現(xiàn)在進(jìn)行時(shí)的基本用法：
a.表示現(xiàn)在( 指說話人說話時(shí)) 正在發(fā)生的事情.
We are waiting for you.
b.習(xí)慣進(jìn)行：表示長期的或重復(fù)性的動(dòng)作,說話時(shí)動(dòng)作未必正在進(jìn)行.
Mr.Green is writing another novel.
(說話時(shí)并未在寫,只處于寫作的狀態(tài).)
She is learning piano under Mr.Smith.
c.表示漸變的動(dòng)詞有：get,grow,become,turn,run,go,begin等.
The leaves are turning red.
It's getting warmer and warmer.
d.與always,constantly,forever 等詞連用,表示反復(fù)發(fā)生的動(dòng)作或持續(xù)存在的狀態(tài),往往帶有說話人的主觀色彩.
You are always changing your mind.
典型例題
My dictionary ___,I have looked for it everywhere but still___ it.
A.has lost,don't find B.is missing,don't find C.has lost,haven't found D.is missing,haven't found.
答案D.前句是一個(gè)仍在持續(xù)的狀態(tài),應(yīng)用進(jìn)行時(shí),由于沒有找到,其影響仍然存在,應(yīng)用完成時(shí),瞬間動(dòng)詞用于否定式時(shí)可用于完成時(shí).
ok?