Unit 4 Grammar-1课件 2023-2024学年牛津译林版七年级英语下册

7下Unit 4 Grammar Look! Here is _ panda. _ panda is eating bamboo. Millie sees _ lion. _ lion is on a big cage. They also see giraffe and_elephant. giraffe has long neck. _elephant has large ears. _ears are like open fans. a a a an a The The The The The 冠词:a & an & the Here is a panda. The panda is eating bamboo. Millie sees a lion. The lion is on a big cage. They also see a giraffe and an elephant. The giraffe has a long neck. The elephant has large ears. 结论: 首次提到某人或某物——a/an,泛指 再次提到某人或某物——the,特指 不定冠词(article):a/an an elephant, an hour,an “M” ,an umbrella a university, a “g” 结论:判断一个单词用a还是用an,不是根据单词首字母,而是根据其音标的首字母是否为元音。 [,ju:n 'v s ti] ['el f( )nt] ['a r] [em] [d i ] [ m brel ] a, e, i, o, f [ef], h [eit ], l [el], m [em] n [en], r [a:], s [es], x [eks] 口诀: Mr Li has a e-fox. 26个字母中音标首字母是元音发音的有: 小试身手:用a或an填空 _orange _“L” _giraffe _ old man _ “u” _umbrella _ hour an an an an a a 注意:判断一个单词用a还是用an,是根据其音标的首字母是否为元音,而不是根据其首字母。 an 不定冠词 ( a / an )用法 1、用于首次提到某人、物,修饰可数名词单数,表示“一”的含义。 This is an interesting book. There is a garden behind Jim’s house. 2、用于固定词组中。 half an hour, a lot of, just a minute, a pair/packet/carton/loaf/… of… 3、a/an + 序数词,表示:又一,再一 His parents have two children, but they want to have a third one. (他的父母有两个孩子,但是他们还想再要第三个孩子 ) 1. 用于再次提到的人或物。如: Lucy bought a new bike, the bike is green. 2. 世界上独一无二的事物。如: the sun the moon 3. 谈话双方都知道的人或事物。如: Open the door, please. 定冠词the的用法 4. 序数词前。如: His parents have three children, and the third one is a girl. 5. 乐器名词前用。如: play the piano play the violin 6. 定冠词+形容词——一类人, 定冠词+在姓氏的复数形式——“全家人”或“夫妇”。 the rich 有钱人 the young 年轻人 the Greens 格林一家 7. 某些专用名词和习惯用语中 the USA in the west of on the left /right 小试身手:用适当的冠词填空,并说出为什么? 1.We live on _third floor of the tall building. 2._Whites are preparing for the coming Thanksgiving Day. 3.My cousin ,Amy,like playing _violin. 4._earth goes around _sun. 5._rich should try their best to help _poor. The the the The the The The 序数词前 用于姓氏复数形式前,表示某一家人 乐器前 世界上独一无二的事物 某些形容词前,表示某一类人 Practice:Fill in the blan