五年级上册英语语法知识点一、注意名词单复数：1、可数名词复数用于：①How many后面；②some/any/many/a lot of/ two, three…后面；③these/those 后面④all the后面；⑤between后面跟一种物体时，这个物体用复数⑥like 后面⑦are前面的人称和名词用复数: we/they/the children2、名词复数的变化规则：1）一般直接+s：bears，students，2）以s. x. sh. ch结尾，加es：bus-buses， box-boxes，3）以“辅音字母+y”结尾，把y变为i, 再加ies：library—libraries hobby---hobbies story---stories4)不规则名词复数:man-men，woman-women，policeman-policemen, foot-feet,Child-children3、不可数名词: water, soup, milk, juice, tea, coffee, bread(面包), rice(米饭), hair等等。
二、注意一般现在时动词的第三人称单数；(注：所有否定句、疑问句中，动词都用原形。
)1、肯定句中哪些情况下用第三人称单数：1）人称代词he, she, it作主语时；2）单个人名、地名或称呼作主语时；3）单数可数名词或 "this / that / the+单数可数名词" 作主语时；4）不可数名词作主语时；5）当数字或字母作主语时，等等。
2、动词第三人称单数变化规则如下：1) 一般情况下,动词后面直接加s. 如：works / plays/ reads2) 以s. x. sh. ch 或o结尾的动词,在后面加es.例:teach-teaches, watch-watches, do-does, go-goes3) 以辅音字母+y结尾的动词, 把 y变为i, 再加es.例：study- studies fly-flies carry-carries4）不规则动词的第三人称单数：have—has；be—is三、人称代词、名词所有格及序数词单数复数一二三一二三主格I you he she It we you they1、主格用来作句中的主语，用于动词前面。
例：They are doctors.2、宾格用来作句中的宾语，放在动词或介词的后面。
本册书上出现的词组：in front of her show her around push me teach youWhat ’s wrong withhim? writehim a letterHere ’s a Christmas card for you. Let me …． chat with them on theInternet giveit a cake3、形容词性物主代词+名词形容词性物主代词,之所以叫它们形容词是因为他们必须放在名词前面。
4、名词所有格作形容词性，在人名或称呼后加’s ，表示所属关系；如：mother ’s ，parents ’5、序数词first---second---third---fourth 1)序数词一般要与the 连用; 2）在某一层楼用介词on 。
四、选择和用所给词适当形式填空1、哪些情况加动词原形（注：有to 时，to 跟后面的动词原形放在同一空格）宾格me you him her It us you them物主代词my 我的your 你的his 他的her 她的Its 它的our 我们的your 你们的their 他们的1）want to +动词原形 2）would like to +动词原形 3）it’s time to +动词原形4）情态动词can+动词原形 5）助动词（do, does , don’t, doesn’t）+动词原形6）let+动词原形 7）祈使句中动词用原形 (如Do your homework, please.)8）否定句在句首加Don’t (如Don’t do your homework, please)+动词原形2、哪些情况加动词ing1）like 2）go 3）be good at 4）be 5)后面跟名词，如swimming lesson动词+ing变化规则如下:A、直接加上ing: draw-drawing play-playing read-readingB、以不发音的e结尾，去e加上ingskate-skating make-making dance-dancinghave-having come-coming write-writingC、以重读闭音节结尾的单词要双写尾字母，再加上ing从单词的末尾开始往前数符合“辅音-元音-辅音”结构的。
（注：词尾是w和y的除外，如：drawing, playing等除外）;run-running sit-sitting put-puttingbegin-beginningget-getting swim-swimming stop-stopping shop-shopping3．形容词加名词（形名）如: a beautiful girl4．动词加副词（动副）如: swim well5．Some和any用法:“some”一般用于肯定句，“any”用于否定句和疑问句。
但在一些表示委婉请求，想得到对方肯定回答时也用“some”。
(小技巧：末尾是句号，句中是any，那这句型是否定句)6．There be 结构就近原则, be动词的选择取决于紧跟在后面的名词数量。
如：There is a teacher and some students in the classroom.7．乐器前加the, 球类前不加the. 如：play the piano, play football8. Who当作特殊的第三人称单数 (Who sing s well? )9. 一般现在时构成：1)主语+be(am,is,are)+其它。
2)主语+行为动词+其它。
关键词：always, usually, often, sometimes, on Sundays, every…(注：主语为第三人称单数，动词加s, es或辅音+y时，把y变为i 再加es；其他时候动词用原形)10. 现在进行时关键词：look, listen, now (注：be动词(is am are) +动词ing, 两者缺一不可)11. and前后谓语动词一致。
指当句子中有两个或两个以上的谓语动词共用同一个主语时，一般谓语动词的时态保持一致。
She often go es fishing and take s photos. Let’s go and have some chicken.12、相同意思不同用法的辨析：1）有； there is/are和have/hasthere is/are表示在某地有某物（或某人）；表示存在；there be就近原则；have/has表示某人有某物；表示所属关系；前面必须有主语。
2）也； too-either-alsotoo用于肯定句和疑问句句末；either用于否定句句末；also用于句中。
3）都； both-allboth用于两者都；all用于三者及以上都。
4）好； good-wellgood+名词；动词+well。
5) 和；with-andwith是介词，意思是“和……一起”，后面跟名词或代词的宾格。
and 是连词，意思是“和”，用and连接两个单数名词或代词作主语时,谓语动词用复数。
五、句型转换①同义句：1.It’s time for sth= It’ｓ time to do sth.该是…时间了（注：for后面跟名词；to后面跟动词原形）It’s time for dinner.=It’s time to have dinner.2.What time is it?=What’s the time? 几点呢？3.There is(are) no…(s)…=There isn’t / aren’t any…没有…4.have no…= don’ｔ have（any）没有…They have no legs or arms. =They don’t have any legs or arms.5.has no = doesn’ｔ have （any）没有…6.I like picnics. = I like having picnics. {注：like后面跟名词或动名词（动词+ing）}7.show sth (某物) to sb(某人) = show sb (某物) sth(某人) 向…展示…东西8.give sth(某物) to sb(某人)=give sb (某物) sth(某人) 给…人…东西9.What a lovely ant!= How lovely the ant is! 多么可爱的蚂蚁啊10.That is Jan’s umbrella.= That umbrella is Jan’s. 那是杰的伞11.What’s wrong with him? = What’s the matter with him? 他怎么了？②否定句1、有be动词（am, is ,are），be后直接加not (am not/ is not=isn’t/ are not =aren’t);2、有can，can后直接加not (can not=can’t);3、只有动词，在动词原形前加don’t；三单动词前加doesn’t, 动词变回原形。
He does his homework. （改成否定句）He doesn’t do his homework.③一般疑问句: 用Yes或No回答的句子1、有be动词，be动词提前；2、有can或would，can或would提前；3、只有动词，句首加Do/ Does, 动词用原形；注意：I’ｍ变Are you ; some变any; my变your; and变or .④特殊疑问句：有特殊疑问词+一般疑问句There be句型提问：1、对数量提问：1）How many +名词复数+ are there +介词短语？（注：对there be后面可数名词的数量提问时，无论主语是单数还是复数，都用复数形式提问）例: There are24classrooms in our school? / There is only one classroom in our school? (对划线部分提问)How many classrooms are there in our school? （注：上面两句提问，都是这句子）2）How much +不可数名词+ is there +介词短语？例: There is some milk in the glass. (对划线部分提问)How much milk is there in the glass?2、对主语提问there be 针对主语提问的特殊疑问句的基本结构是：What’s +介词短语？（注：对there be后面的主语提问时，无论主语是单数还是复数，都用What’s 提问）例：There are six books on the desk. / There is a book on the desk. (对划线部分提问)What’s on the desk?（注：上面两句提问，都是这句子）⑤感叹句的结构：感叹句常用how或what来引导（1）what引导的感叹句，最终修饰的是名词（2）how引导的感叹句，最终修饰的是形容词/副词What a lovely ant!= How lovely the ant is! 多么可爱的蚂蚁啊！对划线提问,疑问词：What问什么； What colour 问颜色；What time 问具体时间（如几点钟）；when 问范围广的时间； where 问在哪里； How old问年龄； how many 问数量(可数名词) ；how much 1）问数量（不可数名词），2）问价钱； how about 问怎样；who 问谁（人）； whose问谁的东西（问主人）；同音词：B—be—bee, C—see—sea, R—are, T—tea, U—you, Y—why, I-eye, too-two-to, four—for, here—hear, there—their, right—write, sun—son, no—know, pair—pear, it’s—its, buy—by—bye, hi—high, wear—where, aren’t—aunt, who’s—whose,近义词(或同义词)：Many—lots of—a lot of, desk—table, like—love, tall—highnear—beside,too—also, listen—hear, look—see, class—lesson, glass—cup, home—house, beautiful—pretty, usually —often, hi—hello, speak—say—talk, river—lake,would like—want, go home —come home反义词(或对应词)：yes—no, this—that, these—those, here—there, go—come, open—close, big—small, fat—thin, tall—short, long—short, black—white, happy—sad, hot—cold, cool—warm, soft—hard, on—under, in front of—behind, in—out, boy—girl, man—woman, wrong—right, down—up, sit—stand, easy—difficult, take off(脱下) —put on(穿上)完整形式：I’m—I am, we’re—we are, you’re—you are, he’s—he is, it’s—it is,there’s—there is, isn’t—is not who’s—who is, Let’s—let us, I’d—I would,can’t—can not, don’t—do not, doesn’t—does not特殊的名词复数：man—men, woman—women, policeman—policemen, child—children, foot—feet,fish—fish, people—people, Chinese-Chinese动词变名词:A. 一般情况下在动词后面直接加er。
