一般现在时。
step 1: 时态概念。
时态,指在不同的时间条件下,动词的形式。
数轴对比各种时态。
step 2: 用法。
1.经常性或习惯性的动作,常与表示频度的时间状语连用。
如: every ~,sometimes, on sundays
i go to school at 7 every morning.
sometimes i am careless.
i h**e piano lessons on sundays.
2.客观真理,客观存在。
the earth moves around the sun.
shanghai lies in the east of china.
3.在格言或警句中。
pride goes before a fall. 骄者必败。
step 3:一般现在时的谓语动词。
1.当谓语是be动词时。
主语+be+表语。
iam主语第三人称单数(he, she, it, 单个人名、地名/称呼) -is
其它(we, you, they及其它复数are
例句: …是老师。
2.当谓语是行为动词时。
主语+行为动词+其它。
第三人称单数时动词变为三单形式。
主语 其它动词原形。
例句:……每天学英语。
补充:三单形式变化规则。
1.一般情况下,直接加-s,如:cook-cooks, milk-milks
2.以s. x. sh. ch. o结尾,加-es,如:guess-guesses, wash-washes, watch-watches, go-goes
3.以“辅音字母+y”结尾,变y为i, 再加-es,如:study-studies
练习:一、写出下列动词的三单形式。
drinkgo __staymake __
lookh**e___passcarry __
comewatch___plantfly __
study___brush___doteach___
二、用括号内动词的适当形式填空。
oftenh**e) dinner at home。
and tommy __be) in class one。
___not watch) tv on monday。
___not go) to the zoo on sunday。
the world cup very much.
often __swim) on saturdays.
parents __read) news*****s every day.
girl __teach) us english on sundays.
and itake) a walk together every evening.
some water in the bottle.
___like) cooking.
___h**e) the same hobby.
aunt __look) after her baby carefully.
always __do) your homework well.
___be) ill. i‘m staying in bed.
___go) to school from monday to friday.
tao __do) not like pe.
child often __watch) tv in the evening.
hai and su yang __h**e) eight lessons this week.
saturday today.
step 4: 句型转换。
一般现在时陈述句变为否定句、一般疑问句。
1.谓语是be动词时。
肯定句:she is late for school.
变为否定句:在be动词后加not, 其它照抄。
she is not late for school.
变为一般疑问句:把be动词提到句首,其它照抄,句末加问号。
is she late for school? yes, 主语+be./no, 主语+be+not.
2.谓语是行为动词。
变为否定句。
第三人称单数时 --在主语后加doesn’t,其后动词三单变为原形。
主语 其它在主语后加don’t,其它照抄。
肯定句:he likes bread.
否定句。肯定句:they like bread.
否定句。变为一般疑问句。
第三人称单数时 --句首加does, 其后动词三单变回原形, 加问号。
主语yes, 主语+does./no,主语+doesn’t.
其它句首加do,其它照抄,加问号。
yes, 主语+do./no, 主语+
肯定句:he likes bread.
一般疑问句。
肯定句:they like bread.
一般疑问句。
注意:当主语为第一人称时,变成一般疑问句时要变为第二人称。
肯定句:i am late for school.
一般疑问句。
肯定句:i like bread.
一般疑问句。
将下列句子改为否定句、一般疑问句并作回答。
1. daniel watches tv every evening.
2. i do my homework every day.
3. she is always a good student.
一般过去时。
step 1: 用法。
1.过去某个时间发生的动作或存在的状态,后加表示过去的时间状语。
we planted many trees last sunday.
my mum was in my aunt’s house yesterday.
2.表示过去经常或反**生的动作。
we often had swimming lessons last year.
step 2:谓语动词为be
当谓语是be动词时。
主语+be+表语。
1)am 和is在一般过去时中变为was。(was not=wasn’t)
2)are在一般过去时中变为were。(were not=weren’t)
step 3:练习。
用be动词的适当形式填空。
一)1. i __at school just now.
2. heat the camp last week.
3. westudents two years ago.
4. theyon the farm a moment ago.
5. yang lingeleven years old last year.
6. therean apple on the plate yesterday.
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