一般現(xiàn)在時(shí):表示經(jīng)常性的事情,經(jīng)常性的動(dòng)作或一般性事實(shí)。
時(shí)間狀語:often 經(jīng)常,usually通常,always 總是,every每個(gè),sometimes 有時(shí),at …在幾點(diǎn)鐘
只有在第三人稱單數(shù)用動(dòng)詞的“三單變化”,其他用動(dòng)詞的原形。
三單變化:1.多數(shù)在動(dòng)詞后+s play — plays like — likes
(1)直接在動(dòng)詞詞尾加-s.
ask---asks work---works get---gets stay---stays
(2)以字母s, x, ch, sh或o結(jié)尾的動(dòng)詞,在詞尾直接加-es.
watch---watches wish---wishes fix---fixes do---does
go---goes pass---passes
(3)以“輔音字母加 - y”結(jié)尾的動(dòng)詞,要先變y為i再加-es.
try---tries study---studies cry---cries fly---flies
情況 | 構(gòu)成方法 | 讀音 | 例詞 |
一般情況 | 加 -s | 清輔音后讀/s/ 濁輔音和元音后讀/z/ | swim-swims;help-helps;like-likes |
以輔音字母+o結(jié)尾的詞 | 加 -es | 讀/z/ | goes,does |
以s,sh,ch,x等結(jié)尾的詞 | 加 -es | 讀/iz/ | watches,washes |
以輔音字母+y結(jié)尾的詞 | 變y 為i再加es | 讀/z/ | study-studies |
不規(guī)則變化have和be動(dòng)詞 | 變have 為 has變be為am,is,are | have-has be-am,is,are |
2.不規(guī)則變化:
be---- is are have----has
二、一般現(xiàn)在時(shí)的用法表示經(jīng)常性或習(xí)慣性的動(dòng)作或存在的狀態(tài);表示客觀事實(shí)或普遍真理;在時(shí)間、條件等狀語從句中,用現(xiàn)在時(shí)表示將來;在某些以here,there開頭的句子中,用一般現(xiàn)在時(shí)表示正在發(fā)生的動(dòng)作
當(dāng)主語是第三人稱單數(shù)時(shí):
1、動(dòng)詞變相應(yīng)的第三人稱單數(shù)形式
2、肯定句主語+動(dòng)詞s+其它
3、否定句主語+doesn't+動(dòng)詞原形+其它
4、一般疑問句Does+主語+動(dòng)詞原形+其它
5、肯定回答 Yes,主語+does
6、否定回答 No,主語+doesn't
7、特殊疑問句特殊疑問詞+一般疑問句
當(dāng)主語不是第三人稱單數(shù)時(shí):
1、肯定句 主語+動(dòng)詞原形+其它
2、否定句 主語+don't+動(dòng)詞原形+其它
3、一般疑問句 Do+主語+動(dòng)詞原形+其它
4、要注意,句式結(jié)構(gòu)錯(cuò)則全都錯(cuò)。
5、謂語動(dòng)詞的形式:do/does
三、一般現(xiàn)在時(shí)的結(jié)構(gòu)一般現(xiàn)在時(shí)的結(jié)構(gòu) | |||
肯定式 | 疑問式 | 否定式 | 否定疑問式 |
I work. | Do you work? | I don't work. | Don't you work? |
You work. | Do you work? | You don't work. | Don't you work? |
We work. | Do you work? | We don't work. | Don't you work? |
They work. | Do they work? | They don't work. | Don't they work? |
He(She,It) works. | Does he(she,it) work? | He(She,It) doesn't work. | Doesn't he(she it) work? |