Unit 3 Grammar课件 2022-2023学年沪教牛津版英语八年级上册

Grammar Unit 3 Computers Complete the article. The first computers were _________ than cars, but now they are becoming ________ and _________. Computers can calculate at a _________ speed than we can. Computers are not _________ than human beings, but they may be able to do a _________ job than us. In the past, computers were _______ expensive, but now they are much ________. cheaper cleverer faster smaller bigger more Grammar A The comparative of adjectives P39 When we compare two people or things, we can use the comparative of adjectives. better better How do we form the comparative of adjectives? -er more than The first computers were _________ than cars, but now they are becoming ________ and _________. Computers can calculate at a _________ speed than we can. Computers are not _________ than human beings, but they may be able to do a _________ job than us. In the past, computers were _______ expensive, but now they are much ________. cheaper cleverer faster smaller bigger more better better We often use _____________________ before the comparative of adjectives. much/ even/ far/ a little more expensive lighter Complete the conversation below and on page 40 with the comparative of the adjectives from the box. heavier smaller bigger The red laptop is _______________among/of the three. When we compare more than two people or things, we use the superlative of adjectives. Grammar B The superlative of adjectives the smallest ￥6,000 ￥4,600 ￥7,500 The red laptop is the smallest among/of the three, but it is ___________________. the most expensive How do we form the superlative of adjectives? -est most the David: I’d like to see some of your cameras. Salesman: Certainly. This is the most expensive model. This is the cheapest model. This is the newest and lightest model. a b c B1 David is shopping for a camera. Look at the photos and write the letter of the correct model after each statement. (