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1、.三年级英语上册知识点总结Unit1 Hello重点单词及短语：apple bag重点句型：Hello！Hi!Good morning/Good afternoon/Good eveningGood bye! 招呼语E.g. Hello, Song Xiangyang.Hi, teacher.单词拓展：banana orange watermelon pear peach lemon strawberry mango grape tomato potato cucumber onion carrot fruit vegetableUnit2 How are you?重点单词及短语：cat do
2、g重点句型：How are you?Im fine./Fine, thank you.单词拓展：pig rabbit tiger mouse/rat ox horse goat sheep chick hen rooster goose lion dragon snake monkey 猴子 bearUnit3 Are you Kitty?重点单词及短语：boy girl wolf sheep egg fan picture colour draw重点句型：Are you XXX?Yes,I am. No, Im not. m=amE.g. Are you Song Xiangyang?Yes
3、, I am. No, I am not.Unit4 My friends重点单词及短语：tall short long short thin fat hand重点句型及短语：This is XXX.Hes/Shes my friend.Hes./Shes . s=isE.g. This is Yao Ming.Hes my friend.Hes tall and strong.单词拓展：big small语法点拓展：比较级和最高级形容词副词比较级最高级变化形式归纳大多数形容词和副词有比较级和最高级的变化，即原级、比较级和最高级，用来表示事物的等级差别。原级即形容词的原形，比较级和最高级有规则
4、变化和不规则变化两种。 规则变化单音节以及少数双音节的词后面直接加-er , -est原级比较级最高级talltallertallestsmartsmartersmartestshortshortershortest特别提醒：以-y,-er, -ow, le结尾的双音节形容词末尾加er和est。如：healthy, funny, busy, hungry, easy, happy, early, pretty, lazy, heavy, dirty, clever, narrow等。以不发音的e结尾只加-r，-st原级比较级最高级nicenicernicestfinefinerfinestla
5、rgelargerlargest“以辅音字母+y”结尾的词改y为i，再加-er, -est原级比较级最高级easyeasiereasiestprettyprettierprettiesthappyhappierhappiestfunnyfunnierfunniestbusybusierbusiest以一个元音加一个辅音字母结尾的单音节词（即重读闭音节词），双写结尾的辅音字母，再加-er，-est原级比较级最高级slimslimmerslimmestthinthinnerthinnesthothotterhottestbigbiggerbiggest 特别提醒：new, few, slow, c
6、lean等词含有字母组合，且发的是长元音，不用双写。大部分双音节词和多音节的词(即音标中含有三个或三个以上元音音素的词)，要在前面加 more，most原级比较级最高级beautifulmore beautifulmost beautifulimportantmore importantmost importantinterestingmore interestingmost interestingexpensivemore expensivemost expensivepopularmore popularmost popular特别提醒：以形容前缀un构成的三音节形容词不适合上述情况，如u
7、nhappy-unhappier-unhappiest,untidy-untidier-untidiest以形容词+ly构成的副词要在前面加 more，most原级比较级最高级slowlymore slowlymost slowlyquicklymore quicklymost quicklyangrilymore angrilymost angrilysoftlymore softlymost softlynoisilymore noisilymost noisily特别提醒：early -earlier-earliest由ING分词和ED分词演变过来的形容词(包括不规则动词如knowkno
8、wn)只能加more或most来表示它们的比较级和最高级。原级比较级最高级interestingmore interestingmost interestingexcitedmore excitedmost excitingtiredmore tired mosttiredboringmore boringmost boring 不规则变化原级比较级最高级good/wellbetterbestbad/badly/illworseworstmany/muchmoremostlittlelessleastfarfarther/furtherfarthest/furthestoldolder/eld
9、eroldest/eldest特别提醒further不仅可以指“距离更远”，还可指“程度更深”。记住以下三个词组：further study(进修)further education(继续教育)further information (进一步的信息)elder仅用于同辈之间的排行，如: elder sister(姐姐) elder brother (哥哥)less作为“更少”仅用来修饰不可数名词，修饰可数名词表示“更少”要用fewer。以下容不作为初中英语教学容，仅供拓展之用。少数单音节词前面加 more, most 构成比较级和最高级，这类形容词一般为表语形容词和由过去分词变成的形容词。af
10、raid - more afraid, most afraid tired - more tired , most tiredfond - more fond , most fond glad - more glad , most gladbored - more bored , most bored pleased- more pleased , most pleased下列形容词和副词的比较级和最高级有两种形式，即：既可加-er/-est也可加more/mostcruel, strict, often, friendly, clever下列形容词和副词没有比较级和最高（即表示“最高程度”或
11、“绝对状态”的形容词和副词没有比较级和最高级）empty, wrong, perfect, unique, extreme, excellent, favourite, true, right, correct, extremely .形容词副词比较级最高级使用注意事项比较应在同类事物之间进行。误：Your English is better than me.正：Your English is better than mine.比较级前可以有一个表示程度的状语，最常见的三大修饰词是：a little, much, even。以下单词也可用来修饰：any, far, still, a lot,
12、yet, rather。My sister is a little taller than me.Their house is much larger than ours.另外，名词短语也可修饰比较级，说明程度。Im three years older than he.特别提醒：very, quite, too不可修饰比较级。避免重复使用比较级。误：He is more kinder to small animals than I.正：He is much kinder to small animals than I.误：He is more cleverer than his brother
13、.正：He is cleverer than his brother.比较要遵循前后一致的原则，注意前后呼应。The population of Shanghai is larger than that of Beijing.It is easier to make a plan than to carry it out.序数词通常只修饰最高级。Africa is the second largest continent.The Yellow River is the second longest river in China.This is the third most popular so
14、ng of Michael Jackson.形容词副词比较级最高级重点句型归纳句型一：形容词或副词比较级+than注意事项：该句型为比较级的最基本句型。只要看到than，即可确定前面使用比较级。He is taller than I am.The boy does his homework more carefully than the girl.句型二：less + 形容词的原级 + than注意事项：该句型表示“不如、不及”，特别需要注意的是，less本身就是little的比较级，后面必须跟形容词的原级，否定就造成了比较级的重复使用。This computer is less expensive than that one.句型三：as +形容词或副词的原级+ as注意事项：该句型表示对比的两者程度相当，as之间必须跟形容词或副词的原级，
