一、词（一）名词1、名词的复数（1）、一般的直接加s，如desk（desks）、pen(pens)、ruler(rulers)（2）、以x 、s、ch、sh结尾的加es如box(boxes)、class(classes)、watch(watches)等（3）、以辅音字母加y结尾的要变y为i加es，如family ,comedy,documentary等(4)、以0结尾的名词，有生命的加es如：tomato(tomatoes)、potato (potatoes );没有生命的加s,如photo(photos)、piano(pianos)、zero(zeros)2、名词所有格在名词的后边加’s ,表示后面的名词属于前面的名词所有，如LiLei’s bag Tom’s desk 、her mother’sbrother3、专用名词的大写如English、Brown 、Rush 、Sunday 、January 、December、Beijing Opera （二）动词1、动词的种类(四类)系动词如be(is am are)；情态动词如can 、may、need；助动词（do does）；行为动词如take 、bring、eat、have(has)、like、sell、buy、sale、play、see、find、go、watch、thank、think 等2、动词的第三人称单数（与名词的复数一样）如eat(eats)take (takes)buy (buys)play (plays)have(has)are (is)3、动词的时态（一般现在时）（1）含有系动词的He is Tim’sbrother .Her mother is an English teacher .含有系动词的句子在变一般疑问句时只将“主语和系动词交换位置”，上面句子变成一般疑问句时分别为Are you a Chinese boy ?（注意第一人称通常变为第二人称）Is she twelve ?Is he Tim’sbrother ?Is her mother an English teacher ?含有系动词的句子在变否定句时只须“在系动词的后边加上not”，前面的几个了陈述句变否定句分别为I’mnot a Chinese boy.She isn’ttwelve .He is not Tim’sbtother .Her mother isn’tan English teacher .(2)含有情态动词的句子（can ）,She can play basketball.His mother’scousin can s ing many English songs.含有情态动词的句子在变一般疑问句时只须将“主语和情态动词交换位置”，上面两句变一般疑问句分别为Can she play basketball ?Can his mother’scousin sing many English songs ?含有情态动词的句子在变否定句时直接在情态动词的后边加上not ,上面两个陈述句变否定句分别为(3)含有行为动词的句子We have many friends.They watch TV at 7in the evening .The students take their books to school .I have lunch at school .You have a sister .含有行为动词的句子在变一般疑问句时要在原句子的前面加do.上面的句子变成一般疑问句分别为Do you have many friends ?Do they watch TV at 7in the evening ?Do the students take their books to school ?Do you have lunch at school ?Do you have a sister ?含有行为动词的句子在变否定句时只须在行为动词前加don’t .上述五个陈述句变否定句分别为We don’thave many friends.They don’twatch TV at 7in the evening .The students don’ttake their books to school .I don’thave lunch at school .You don’thave a sister .含有行为动词的句子，当主语是第三人称单数时，行为动词要加s (或es)如：She has a red pen .He has eggs for breakfast .My brother watches TV every evening .He wants to go to a movie .含有行为动词的句子，当主语是第三人称单数时，变一般疑问句要“在原句子的前面加上does ,同时行为动词要还原”。
上面的句子变成一般疑问句分别为：Does she have a red pen ?Does he have eggs for breakfast ?Does her mother buy a skirt for her ?Does she like thrillers ？Does your brother watch TV every evening ？Does he want to go to a movie ？含有行为动词的句子，当主语是第三人称单数时，变否定句时“在行为动词前面加does’nt ,同时原行为动词要还原”。
上面的句子变否定句分别为：She doesn’thave a red pen .He doesn’thave eggs for breakfast .Her mother doesn’tbuy a skirt for her .She doesn’tlike thrillers .My brother doesn’twatch TV every evening .He doesn’twant to go to a movie .（三）形容词本册所学的形容词不多，注意拼法和反义词big (small)long (short)sad (happy)boring (interesting\funny )exciting difficult relaxing great healthy old (new)successful white (black)（四）代词人称代词第一人称第二人称第三人称单数复数单数复数单数复数主格I we you you she\ he\ it they宾格me us you you her\ him\ it them物主代词my our your your her \his\ its their2、指示代词:this (these)that (those)3、不定代词some someone4、疑问代词who what how much how old (疑问副词：whenwhere )5、反身代词yourself(五)数量词1、基数词one two three four five six seven eight nine ten eleven twelve thirteen fourteen2、序数词first second third fourth fifth sixth seventh eighth ninth tenth （六）介词：本册的介词较少，主要用在介词短语里面，如on：on sale (销售) \on weekends (在周末) \on April 8th, (在四月八日) \ on the desk (在桌子上) \on TV (在电视上) \in：in English (用英语) \in the afternoon (在下午)\ in the case (在盒子里) \T-shirt in red (红色T恤) \ be in the movie（出演这部电影）\ in September (在九月)be in our school music festival （参加我们学校的音乐节）at：call sb.at 3356 (拨打3356找某人) \ at your school (在你们学校里) \ at HuaxingClothes Store （在华兴服装店）\ at a very good price (以非常优惠的价格) \ at six (六点钟)have a look at (看一看)of：a set of (一串…)\ the photo of your family (你的全家照) \ lots of =a lot of (许多) \date of birth（birthday）(生日)for：thanks for =thank you for (谢谢某人的….)\bag for sports (运动包) \ pants for $30 (卖30元的裤子) \ see for yourself (亲自看看) \ for girls (对女孩子来说) \ like sth. for lunch (喜欢吃……当作午餐)about：about Chinese history (有关中国历史)under：under the desk (在桌子下面)（七）副词：除疑问副词外，本册的副词有only too very well often also really 副词only often also really 等在句中的位置都是在行为动词前面或是系动词的后面。
注意几组词的区别：1、too 和also ：too一般放在句子的末尾，also在行为动词前面或是系动词的后面。
2、well 和good ：两个词都有“好”的意思，但well 是副词，而good 是形容词，well修饰动词，放在动词的后面，good 修饰名词，放在名词的前面。
如play basketball well speak English well a good student Good morning（八）冠词：只有不定冠词a (an)和定冠词the 两个1、不定冠词a和an ：a用在辅音前，如a pen a chair \ an apple an egg an 用在元音前。
an old teacher an English book an action movie 注意辅音字母第一个音是元音的情况：F H L M N S X这七个字母的第一个音是元音，在说一个以上字母时要用an ,如an“F” (一个F)an “X” (一个X)。