本试题 “We _________ for a picnic if it _________ rain this Sunday.A.go, doesn’tB.will go, won’tC.will go, doesn’tD.go, won’t” 主要考查您对一般现在时
过去进行时
过去完成进行时
等考点的理解。关于这些考点您可以点击下面的选项卡查看详细档案。
一般现在时的句子转换:
(1)当句子中有be动词或情态动词时,则把be动词或情态动词(can,could等等)提到主语的前面变成疑问句;在be动词或情态动词后面加not变成否定句.
例:
①陈述句:She is a student.
疑问句→ Is she a student?
否定句→ She is not a student.
②陈述句:I can swim.
疑问句→ Can you swim
否定句→ I can not swim.
(2)当句子中即没有be动词,也没有情态动词时,则在主语前加助动词do (you,以及复数),does(单数she,he,it)变成问句;
在主语后谓语动词前加助动词don’t(I,you,以及复数), doesn’t(单数she,he,it)变成否定句,助动词后的动词要变成动词原形。
例:
①陈述句:We get up at 7:00 every morning.
疑问句→Do you get up at 7:00 every morning?
否定句→We don’t get up at 7:00 every morning.
②陈述句:She has a little brother.
疑问句→ Does she have a little brother?
否定句→ She doesn’t have a little brother.
一般现在时的表达方法:
主要通过谓语动词的变化和用时间词语来表示,其中最主要的是谓语动词的变化。现在一般时动词变化的规则是:
1.如果主语是名词复数和第一人称I、 we ,谓语动词不用做任何变化,即仍然用动词原形表示:
We usually go to school at 7:30. 我们通常7:30上学去。[go]
My parents give ten yuan to my sister every week.我父母每星期给我妹妹十元钱。[give]
2.主语是任何一个单数名词或者是第三人称单数,谓语动词要进行必要的变化。特别提一点:不可数名词也算作单数处理。
3.谓语动词的变化规律是:
第三人称单数的构成见下表:
词 |
构成 |
举例 | |
一般情况 |
词尾+s |
动词原形 |
第三人称单数 |
work(工作) |
works | ||
以-ch, -sh, s, x, o结尾 |
词尾+es |
teach(教) |
teaches |
以“辅音字母+y”结尾 |
变y为i,再加es |
fly(飞翔) |
flies |
特殊变化的词:
be (是) - am,is,are
I am
she/he/it,名词单数都用 is
we,you,they,名词复数都用are
have (有) - have,has
I,we,you,they,名词复数都用have
she/he/it is,名词单数都用 has
助动词,不论单复数、不论什么人称都没有变化,都用 can,may,must,need,ought to 等。
而且,句子中有了助动词,谓语动词就不需要有任何变化了,即用动词原形表示。例:
We have six classes every day. 我们每天上六节课。
I often get up at 6:30. 我经常6:30起床。
Jack likes Chinese food very much.杰克很喜欢中国饮食。
We can see some pictures on the wall. 我们能看到墙上的画。
4.一般现在时常用的时间词语
常用于一般现在时的词语有 sometimes/usually/often/every day(week,year)/ now/always 等。
这些时间词语只是辅助作用,这些词语也可用于其它的时态,所以谓语动词变化才是最关键的。
注意:当表现强烈的感情色彩时,尽管有如 always/never/seldom 等频率副词,但一般在频率副词前加上be动词,后面变为动词的现在分词形式。
例:My father lose his key again. He is always losing his key.
一般现在时中当主语为第三人称单数的时,动词上要改为第三人称单数形式。
过去进行时和一般过去时的区别:
一、二者概念理解
一般过去时叙述旧事,过去进行时描述背景。
A、一般过去时
1.过去状态、动作或事件
He went to Beijing the other day.(带具体时间)
2.过去的习惯
a would ,used to与过去时
would 表间断性不规则的习惯,常带频率时间
used to 表一贯性有规律的习惯
They used to meet and would sometimes exchange one or two words.
He smoked a lot two years ago. (过去行为)
bWould 用于文中不用于句首,只表过去习惯。
Used to 表今昔对比的含义,叙述习惯动作可与would 换用。
When he was a boy , he would often go there . (叙述过去)
She isn't what she used to be. (今昔对比)
c 表示状态时一般只用used to
Tom used to be fat /There used to stand a tree there. (状态)
dwas (were) used to +ving表示“合适于,适应于…..”
He used to work at night . (“习惯”表经常)
He was used to working at night. (习惯表适应)
3.过去的经历,平行动作,依此事件用一般过去时。
He sat there and listened to the radio.(依此发生)
4.客气委婉的语气,用于情态动词,助动词和want , wonder , hope 等
How did you like the film? / Could you help me?
B. 过去进行时
1.在过去某阶段或某一时刻正在发生
What were you doing at 8:30 last night? (过去某时刻正在发生)
2.性动词用过去进行时表示按计划、打算
During that time he was going with us.(表示打算)
3.lways ,often ,usually 等连用表喜爱,讨厌等感情色彩。
He was always Changing his mind.
二、区别
A. 进行时表某一行为的“片断”一般时表示行为的“整体”和存在的状态。
I was reading the book at that time. (未读完,“读”的片段)
I read the book yesterday. (已读完,表整个“读”)
B、一般持续时间状语多与进行时连用
It was raining all night.(优先用was raining ,rained 为持续动词,故也可使用)
He was writing a letter the whole of afternoon. (短暂动词与持续时间连用,表反复,连续发生,不可用一般过去时)
C、while 时间状语从句中用短暂动词时只能用进行时。
例:He broke a chair while he was jumping up and down.
D、While 所在主从句动作大致持续相等时主从句一般都用进行时,但若是持续动词可都用一般过去时,两个动作一长一短时短的用一般时,长的用进行时。
I was cooking the dinner while he was playing the piano.(平行)
I cooked the dinner while he played the piano.
I saw him while I was walking to the station.
过去进行时的基本用法:
过去进行时的基本用法主要表示过去某一时间正在进行的动作。如:
He fell asleep when he was reading. 他看书时睡着了。
2. 用过去进行时表示现在主要是为了使语气委婉、客气。如:
I was wondering if you could give me a lift. 我不知你能否让我搭一下车。
【注】一般过去时也有类似用法,但比较而言,用过去进行时显得更客气,更不肯定。
3. 过去进行时表示感情色彩与现在进行时相似,过去进行时也可表示满意、称赞、惊讶、
厌恶等感情色彩,也通常与 always, forever, continually等副词连用。如:
They were always quarrelling. 他们老是吵架。
4. 动词be的过去进行时动词be的进行时也可表示过去一时的表现或暂时的状态。
比较:He was friendly. 他很友好。(指过去长期如此)
He was being friendly. 他当时显得很友好。(指当时一时的表现)
特殊用法
1、当句子意思很清楚时,我们也可以把两个动词都换成一般过去时
We listened carefully when the teacher read the text. 老师读课文时,我们都仔细地听着。
2、表示按计划、安排过去将要发生的事。
用于come,go,leave,start,arrive等表示位置转移的动词时,也可以用过去进行时表示过去将要发生的动作。
如:He told me that he was going soon. 他告诉我他很快就要走了。
3、表示故事发生的背景。
It was snowing as the medical team made its way to the front.
那支医疗小组往前线行进时,天正下着雪。
4、表示一个新的动作刚刚开始。
过去进行时可用来引出一个新的动作,这种用法颇有点儿像镜头转换。
Five minutes later,he stood in the doorway smoking a cigarette.
5分钟后,他已站在门口抽着烟。
5、过去进行时还可和when结构遥相呼应,含有意外之意。
I was walking in the street when someone called me.
我正在街上走时突然有人喊我。
6、用来陈述原因或用作借口。
She went to the doctor yesterday. She was having a lot of trouble with her heart.
她昨天去看病了。她患了很严重的心脏病。
7、与always,constantly等词连用,表示感情色彩。
The girl was always changing her mind.
这女孩老是改变主意。
过去完成进行时:
就是相对过去的某个时刻来说已经对现在有直接影响并且还在进行的动作。放在间接引语或虚拟语气中时它的时态不能再向前推,向后推是现在完成进行时。
过去完成进行时是由"had been+现在分词"构成。
例如:She had been suffering from a bad cold when she took the exam.
她在考试之前一直患重感冒。
特点:
1.这种时态很少用在否定句中,而多以过去完成时代替:
He had not practised English for many years.(普通说法)
He had not been practising English for many years.(少见)
2.这种时态还可用在said,supposed等引起的间接引语中,代替现在完成进行时:
He said,“I have been speaking to John.”= He said that he had been speaking to John.
He thought,“She was watching me when I passed.”= He thought that she had been watching him when he had passed.
3.过去完成进行时经常与现在完成进行时混淆。
现在完成进行时 (The present perfect progressive) 由 have/has been +-ing 分词构成;
过去完成进行时( The past perfect progressive tenses )由 had been +-ing 分词构成.
现在/过去完成进行时的用法:
A. 在某段时间内一直进行的动作用现在完成进行时来强调动作在某段时间里的持续性.
动作通常有"现在"的结果,要根据上下文来确定到"现在"为止,动作是否还在继续进行.
同样,过去完成进行时表示在过去更早时间内进行的动作,并对过去某一时刻产生结果。
B.表示重复动作的现在/过去完成进行时
我们也可以用完成进行时形式来表示现在或过去经常重复的动作
注意:过去完成进行时和过去完成时类似,需要有过去这一时间点。
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