简单句的成分及主谓一致原则 最基本构成:主语+谓语+宾语,其中谓语由动词来充当。 主谓一致原则,就是句子的谓语要始终与主语保持数量上的一致性。当主语是第三人称单数(简称“三单”)时,谓语动词也要相应变成单数形式;当主语非“三单”时,谓语动词就用原形。实意动词变“三单”的规则如下: 1)一般动词在词尾加“-s ”,如:like-likes, tell-tells, play-plays等; 2)以字母s, x,ch, sh结尾的动词加“-es ”,如:guess-guesses, teach-teaches, watch-watches等; 3)以o结尾的动词一般加“-es ”,如:do-does, go-goes等; 4)以辅音字母加y结尾的动词,先变y为i,再加“-而是”,如:fly-flies, carry-carries等; 5)have的三单形式是has。 冠词的用法(名词前面必须要有冠词) 冠词分为定冠词(the)和不定冠词(a, an)两种。 1、定冠词the表示“特指”,可译为“这个”、“那个”、“这些”、“那些”。 2、不定冠词a, an用来表明(可数)名词的数量是“一个”。an用于以元音开头(注意不是以元音字母开头)的单词前,a则英语非元音开头的单词前。 3、不定冠词a, an与基数词one的区别是:不定冠词不是刻意强调“数量”,而基数词则强调“数量”。 助动词(do, does )的用法 只有实意动词作谓语时才涉及使用助动词。以like为例: 1)当句子为肯定句时不涉及使用助动词,只涉及“主谓一致”原则。 eg : I like English a lot. Michael likes Chinese food very much. 2)当句子为否定句时,要根据主语的人称来决定使用相应的助动词:当主语为“三单”时,要使用does;当主语为“非三单”时,用助动词原形do。例如把下列句子变否定句: Kangkang likes math.----Kangkang doesn't like math. They like sports.------They don't like sports. 3)当句子变疑问句时,同样要根据句子的主语来决定在句首使用Do或Does.例如下列句子变问句: Michael likes Chinese Food.----Does Michael like Chinese food? Yes, he does./ No, he doesn't. Jane and Helen like music.----Do Jand and Helen like music? Yes, they do./ No, they don't. 名词所有格 1、Kangkang's books;Tom and Helen's desk; Ann's and Maria's bikes; 2、用of表示“......的”,但要从of后往of前翻译:a book of mine(我的一本书) 3、have与of的区别: have一般表示“主动拥有”,往往用于有生命的人或动物;无生命的物体一般不能“主动拥有”,表示所属关系时要用of。例如: I have a new bike. She has two big eyes. a door of the house 课本中的知识点 1、Unit 1 ——Unit 2 1)问候语: Good morning/ afternoon/ evening. How are you?---Just OK, thank you. How are you?---Not bad, thanks. Hi! Hello! How do you do? 2)道别用语: Nice/ Glad to meet/ see you.(meet用于初次见面,see用于熟人间) Nice to meet/ see you, too. Goodbye. Byebye. Bye. See you (later/ tomorrow/ next time)! So long! Good night! 3)介绍人或者物的句型:This is... 4)Excuse me.与I'm sorry.的区别: Excuse me.是要引起对方的注意,而I'm sorry.则是向对方道歉。 5)词组be from = come from in English 5)当问句中问到this/ that时,回答要用it;问到these/ those时,要用they来回答。 例如: What's this in English?----It's an eraser. What are those?----They are books. 6)对Thanks.的回答:That's OK./ You're welcome./ My pleasur. 7)look the same = have the same looks give sth. to sb. = give sb. sth. be like = look like in the tree/ on the tree (树上结的、长出来的用on,否则用in) in red(穿着红色的衣服) in the desk(在空间范围之内) in English(用英语) help sb. do sth. 以上就是《新人教版七年级上册英语知识点汇总》的内容,更多新人教版七年级上册英语知识点的相关内容请关注中考网。 (责任编辑:admin) |