Unit 9 WheelsPeriod Six Grammar单元语法(一)——现在完成进行时[语法图解][语法感悟]单句语法填空1．People have_been_enjoying (enjoy) the benefits of cycling in Amsterdam for years.2．Solar racers have_been_coming (come) to Australia for years for the World Solar Car Challenge.3．You have_been_designing (design) solar racing cars for a long time.4 ． I have_been_building (build) a new car with a team from Queensland University.一、现在完成进行时的定义与构成现在完成进行时表示动作从过去某一时间开始，一直延续到现在，可能还要继续下去。由“have/has＋been＋doing”构成。现 在 完 成 进 行 时 常 使 用 如 下 时 间 状 语 ： this month/week/year, these days, recently, lately, all the time /morning/afternoon, in/the past/last few＋时间段 ，since＋时间点，for＋时间段。I've been writing letters all this morning.我写了一上午的信。They have been telephoning you several times in two days.他们在两天内给你打了好几次电话了。二、用法1．表示动作从过去某时开始一直持续到说话时还在进行，或可能还要继续下去。通常和“for＋时间段”或“since＋时间点(或从句)”的时间状语连用。I've been waiting for an hour but she still hasn't come.我已等了一个小时，但她还没有来。She has been playing tennis since she was eight.从八岁以来她一直在打网球。2．现在完成进行时在上下文清楚时亦可不用时间状语。这种现在完成进行时多指“刚才”或“近来”发生的动作，一般不再继续，并往往含有一种直接的结果。You've been working too hard.你工作太辛苦了。You've been smoking again.你又抽烟了。Who's been insulting you?谁欺负你了？3．有时现在完成进行时所表示的动作并不是一直在不停地进行，而是在断断续续地重复。这时现在完成进行时可用于瞬间动词。He's been shaving since last year.他从去年开始就一直刮脸。You have been saying for a year that you will study abroad.整整一年你都在说要出国学习。4．强调动作延续时间的长久或带感情色彩。She has always been working like that.她一贯是那样工作的。Tom's hands are very dirty. He has been repairing the car.汤姆的手很脏。他一直在修汽车。[即学即用] 单句语法填空1．I have_been_living (live) in Hawaii for ten years.2 ． She has been writing (write) the letter since four o'clock in the afternoon.3．I have_been_working_ (work) on the math problem for half an hour but I haven't worked it out.4．He has always been speaking (speak) to the old like that.5 ． The two friends have_been_chatting (chat) on the Internet for three hours, and they will go on till next morning.
