UNIT 1 Section Ⅲ Using language（课件PPT）-【新课程学案】新教材2023-2024学年高中英语必修2 （外研版）

Section Ⅲ　Using language NO.1 NO.2 NO.3 语法专区/落实“形式”—意义 —使用“三维动态语法观” 听说专区/在主题活动中提升语言技能 新知学习/核心语言点集中释解 目 录 语法项目——情态动词(1) 初识语法——在美文运用中体悟 背美文 　　After several weeks of learning in senior high school, Li Qing is able to adjust himself to the new school life. In classes, he has to focus himself on his teachers, or he can't grasp what his teachers have taught. Meanwhile, his teachers often tell him that he had better balance his study and play. He needn't stay up to do his homework. However, I dare say he is going to find himself growing into a well­rounded individual. 续表 悟语法 ①黑体词汇都是情态动词，它们后面都接动词原形。 ②情态动词一般无人称和数的变化。can和dare有时态变化，be able to和have to有人称和时态的变化。 ③构成否定句时，not放在情态动词后面。 慧学语法——在归纳演绎中学通 情态动词表示说话人对某一动作或状态的态度，本身具有一定的词义，不能单独作谓语，必须和动词原形一起构成谓语。情态动词(除be able to和have to之外)一般无人称和数的变化，个别情态动词(can, dare等)有现在时和过去时两种时态变化。 一、be able to的用法　 [先感知] ①(教材典句)I've enjoyed food from both countries ever since I was able to hold a knife and fork — and chopsticks! ②(教材典句)Then you'll be able to train your brain to select healthy food in real situations. ③(教材典句)So, if you're a sugar addict and aren't able to say no to chocolate or cola, you had better download it now! [会发现] be able to意为“能够”，后接_________，表示某人做某事的能力，be动词有时态、人称和数的变化。 [明规则] 1．be able to强调通过努力而获得的能力或一种结果。 2．be able to 可用于各种时态，也可用在may, might, want等词后。 动词原形 3．be able to表示“能力”时，和can的用法相似。但也有区别： (1)be able to有多种时态形式， 而can只有一般现在时和一般过去时两种时态，即can和could。 (2)be able to强调通过努力而获得的能力，而can则强调自身已具有的能力。 He will be able to sing this song in English in a few minutes, too. 几分钟之后，他也能用英语唱这首歌。 She can sing the song in English. 她能用英语唱这首歌。 (3)be able to 强调一种结果，而can只强调一种可能。 Luckily, he was able to escape from the big fire in the end. 幸运的是，他最终逃出了大火。 We can eat in a restaurant, if you like. 如果你愿意，我们可以去餐馆吃饭。　　 [对点练]　(选词填空：can, be able to) ①(2023·全国甲卷) Carson proves that a simple lyric form that has been passed down through the ages ____ still be employed today to draw attention to important truths. ②When I was young, I ______