【正文】 →data, medium→media, bacterium→bacteria, curriculum→curricula, criterion→criteria, phenomenon→phenomena.(um/on→a)analysis→analyses, basis→bases, crisis→crises, diagnosis→diagnoses.(is→es)8)復(fù)合名詞變復(fù)數(shù)：以不可數(shù)名詞結(jié)尾的復(fù)合名詞無復(fù)數(shù)形式，如：homework. 以man或woman為前綴的復(fù)合名詞變復(fù)數(shù)，前后兩個名詞都變復(fù)數(shù)，如：manservant→menservants, woman student women students.其它復(fù)合名詞變復(fù)數(shù)：grownup→grownups, brotherinlaw→brothersinlaw, standby→standsby. 9)復(fù)合形容詞做定語時，其中的名詞保持單數(shù)：a sixyearold boy，a twohundredpage book大多數(shù)名詞變復(fù)數(shù)時在末尾直接加“s”：book boy piano 以“s, x, sh, ch”結(jié)尾的名詞變復(fù)數(shù)時在末尾加“es”：dress watch box部分以“o”結(jié)尾的名詞變復(fù)數(shù)時也要在末尾加“es”：hero nero potato mango tomato以輔音加”y”結(jié)尾的名詞變復(fù)數(shù)時在末尾將“y”改“i”加“es”：family baby puppy以“f”或“fe”結(jié)尾的名詞變復(fù)數(shù)時在末尾將“f”或“fe”改為“ves”：knife wife部分名詞屬于單復(fù)數(shù)同形，名詞復(fù)數(shù)還是其本身：sheep fish部分名詞本身就是復(fù)數(shù)：people glasses clothes部分單詞中含有字母組合“oo”，應(yīng)將“oo”改為“ee”：foot goose部分名詞屬于不規(guī)則變化，應(yīng)專門記憶：man child mouse不可數(shù)名詞一般不使用復(fù)數(shù)形式：water milk第三篇：第三人稱單數(shù)和英語名詞復(fù)數(shù)練習題在一般現(xiàn)在時中，當主語是第三人稱單數(shù)時，謂語動詞要用第三人稱單數(shù)形式，即常在動詞原形后加s或es。如：He likes watching 。It looks like a 。如：①Han Mei looks like her 。③Uncle Wang often makes 。如：①A horse is a useful 。③That car is 。四、不定代詞someone, somebody, nobody, everything, something等及指示代詞this, that作主語時，是第三人稱單數(shù)。②There is something wrong with the 。④That is an 。如：①The milk is in the 。六、當數(shù)字或字母作主語時，看作第三人稱單數(shù)。②“I” is a letter.“I”是個字母。 often ________(have)dinner at and Tommy _______(be)in Class _______(not watch)TV on _______ to the zoo on they ________(like)the World Cup? _______they often _______(do)on Saturdays? your parents _______(read)newspapers every day? girl _______(teach)us English on and I ________(take)a walk together every ________(be)some water in the _______(like) _______(have)the same aunt _______(look)after her baby always _______(do)your homework _______(be)’m staying in _______(go)to school from Monday to Tao _______(do)not like child often _______(watch)TV in the Hai and Su Yang _______(have)eight lessons this .－What day _______(be)it today? － It’s （Singular Form）和復(fù)數(shù)(Plural Form)兩種形式表示一個人或物用單數(shù)形式，表示一個以上的人或物用復(fù)數(shù)形式。s在濁輔音后面讀[z]，在清輔音后面讀[s]，在[t]后與[t]一起讀[ts]在[d]后與[d]一起讀[dz]。例如： tomato — tomatoes 西紅柿 potato — potatoes 土豆 photo — photos 相片 radio — radios 收音機 zoo — zoos 動物園4．以f 或fe 結(jié)尾的詞，先把f 改為v，再加–es，讀[vz]。例如： story — stories 故事 city — cities 城市 family — families 家庭 baby — babies 嬰兒 注意：boy — boys 男孩 toy — toys 玩具 key — keys 鑰匙6．有些名詞有不規(guī)則的復(fù)數(shù)形式。例如； deer — deer 鹿 sheep — sheep綿羊 Chinese — Chinese 中國人 Japanese — Japanese 日本人8．有些學科名詞雖以s 結(jié)尾，但通常都做單數(shù)名詞看待。例如： people 人們，人民 police 警察 public 公眾名詞由單數(shù)變成復(fù)數(shù)的練習寫出下列名詞復(fù)數(shù)leaf______puppy_______box_______knife_______fly______fox______ bus______ bench_____ brush_____kiss______church______dish_____ruler______peach________ glass_____pencil________boy______zoo______man______roof_______sheep_______knife______lady______key______story______watch______bamboo______city______family______day_____apple_______eraser______speech______thief______mouse______fish_____goose____people______ox_____Chinese_______deer_______foot______child_______tooth_______guy________hero_______spy______boss_____monkey______ city ______ goat ______ radio ________ horse ______ dog ______ two__________(pair)of____________(shoe)用所給的單詞的復(fù)數(shù)的正確形式填空：1There are so many________(wolf)in the There are three ______(chair)in the These _______(tomato)are ______(hero)are My brother looks after two ______(baby)6There are some ______(deer)eating the My father likes to eat _______(potato).8Chinese ______(people)like to eat I have a lot of ______(toy)in my I help my mother wash ______(dish)in the I have two ______(pencilbox).12There are some ______(bus)in the Peter has eight _____(foot).14Linda has three _______(tooth).15There are some ______(child)in the Michael likes the ______(mouse).17There are some ______(goose)in the My uncle and father are _____(man).19Tom and King are _____(boy).20Linda has three ______(tooth).選出正確形式1．I can see three ________ in the monkeysB monkeysC monkey pig has four two brothers are both are four ___________ in the can see ten _____ in the _____ has , watches , watch , watches an you see _______on the plate? girl often brushes her_____ before she goes to Black often drink some are some _____ on the will learn will show us some new ____ of drank two of orange of orange of oranges cat eats two ______ last need a pen and some 16 Jim was late for two classes this said that he forgot both of the number number ’s number numbers newlybuilt library is a ______ storeys ’s storeys’ umbrella is it?It’s else’s else ’s else’s’s else feel terribly hot, What’s the _____? of room’s temperature temperature of room’s will make a trip around the world during the ing Evens Evens’ Evenses Evenses’ girl talking to Mary is a friend of ’s sister sister’s ’s sister’s of Mary’s woman over there is ______ and Shelley’’s and Shelley’s and Shelley ’s and Shelley is very needs night rest rest night