表示现阶段正在进行的动作（PPT课件）.ppt

Unit 3 Section Ⅳ Grammar & Writing 精品课件1(人教版必修1)
写作专题突破
Unit 1
语法专题突破
Section Ⅳ
语法专题突破
品味语法1
now it is the summer vacation and I’m helping my dad on the farm.
现在是暑假,我在农场帮我爸爸干活。
’m sitting on a rock near the river with my friends.
我和我的朋友们正坐在河边的一块岩石上。
are playing basketball now.
现在他们正在打篮球。
are making model planes these days.
这些天我们在做飞机模型。
自我探究1
此四句用现在进行时表示现在进行的动作,有两种含义:①表示说话的时刻正在进行的动作,常与时间状语now,at the moment等连用。②表示现阶段正在进行的动作,常与today,this week,this term等连用。
品味语法2
is going to Guangzhou by plane tomorrow.
is leaving for the airport by taxi this afternoon.
is staying in Xi’an with her parents next winter.
ing with Betty to see her off tomorrow morning.
自主探究2
此四句是用现在进行时代替将来时态,表示一个最近按计划或安排打算要进行的动作,这类动词通常是瞬间动作,只限于少数动词,常见的有:e,leave,arrive,sleep,stay,play,do,have,take,get to,see off,etc.
现在进行时
。
What are you doing now,Bob?
鲍勃,你在干什么?
Look!What are they watching?
看,他们正在看什么?
讲解归纳
,虽然此刻动作不一定正在进行。
e is working on a new book about stories in schools.
乔治在写一本关于校园故事的书。
She is studying law while her brother is studying medicine.
她学习法律而她哥哥学习医学。
,repeatedly,constantly,forever等词连用时,强调不断重复等意,常常含有赞成、厌烦、生气等情绪。
He is always changing his mind.
他总是改变主意。
He is forever thinking of others.
他永远都为别人着想。
。这种结构中常用动作动词或去向动词,如arrive,leave,travel,start,e,go,fly等。
He is leaving for London next week.
他下周要去伦敦。
What time is the plane taking off?
飞机什么时候起飞?