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(shuō)話人說(shuō)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(zhǎng)期的或重複性的動(dòng)作，說(shuō)話時(shí)動(dòng)作未必正在進(jìn)行。 Mr. Green is writing another novel. (說(shuō)話時(shí)竝未在寫(xiě)，衹処於寫(xiě)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，表示反複發(fā)生的動(dòng)作或持續(xù)存在的狀態(tài)，往往帶有說(shuō)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 findC. 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)，由於沒(méi)有找到，其影響仍然存在，應(yīng)用完成時(shí)，瞬間動(dòng)詞用於否定式時(shí)可用於完成時(shí)。