7B_unit_4__Grammar.ppt

1. 名词前已经有指示代词（this, that, these, those）、形容词性物主代词（my, his, our …）或名词所有格等限定词。 2. 表示语言、学科、三餐、球类运动、棋类运动的名词前。 3. 表示星期、月份、季节、某些节日的名词前。 4. 表示人名、国名、称呼语或头衔等专有名词前。 5. 某些固定短语中。 by bike , by bus, at first, at work, on foot, go to school, go to bed,等。 over 在……的正上方 under在……的正下方 above在……的上方(表面 不接触) below 在……的下方 on在……的上面(表面接触) Can you fill in the blanks with these prepositions. 1. There is a face _____ the desk. 2. The moon is ______ the desk. 3. The sun is ______ the desk. 4. I can see a star ______ the desk. 5. There is a tree ____ the desk. 1. The football is ______ the door, so I can’t see it. 2. Don’t stand __________ us, or we can’t see the film clearly. 3. There is an electric fan _____ the desk. 4. Look! Your rubber is _____ the chair. Pick it up. 5. The moon is now _____ the trees. * Unit 4 Finding your way There is a cage in the picture. a cage The cage is beautiful. a snake a lion a tiger a giraffe an egg an umbrella an orange an English book 1. 第一次提到某人或某物时。 I have a book. 2. 泛指某一类的人或物。 A panda is very lovely. 判断一个单词用 a 还是用 an，是根据其读音，而不是根据其首字母。以元音音素开头的词前用“an”，以辅音音素开头的词前”a“。如：an hour, an apple, an elephant, a useful book等。 Look! Here is a panda. The panda is eating bamboo. Look! Here is an apple. The apple is red. 1. 指上文提到过的人或物。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. 谈到彼此都知道的人或事物。如： Open the door, please. 4. 序数词和形容词最高级前。如： She is always the first to get to school. 5. 乐器名词前用。如： play the piano play the violin 6. 定冠词与形容词连用表示一类人，加  在姓氏前面表示一家人。如： the rich 有钱人 the young 年青人 7. 某些专用名词和习惯用语中用定冠 词。 the Great Wall by the way Millie: Let’s go to the Panda House first. Daniel: Here we are. I can see(1) ___ panda there. It’s lying on the grass. Millie: How cute! I love pandas. Look! There’s (2)____ baby panda. It’s so small. a a Daniel : Yes. (3)_____ baby panda doesn’t look like its mother. Millie: Now let’s go to see some l