Unit 8 It must belong to Carla. Section A Grammar Focus-4c
Learning Objectives
By the end of the class, students will be able to: Learn to use must, might, could and can’t for making inferences. It must be Carla’s. It could be Mei’s hair band. I’m not sure, but it can’t be a dog.
1. A: Where’s Jean?
B: I’m not sure. She _m__ig__h_t_b__e_ (is/might be/must be) in the laboratory.
2. A: Everyone is going to the pool after school.
B: Really? It _m__u_s_t__b_e(must be / can’t be /could be ) hot outdoors.
5. A: I hear water running in the bathroom.
B: It _c_o_u__ld__b_e__/m__u_s__t_b_e(could be / must be / can’t be) Carla. She was thinking
of taking a shower.
情态动词的被动语态
1. 情态动词的基本概念。 情态动词表示说话者的语气和情态, 无人称和数的变化; 本身虽有一定的意义, 但不能独立作谓语, 后接动词原形, 一
起构成谓语。 常用来表示说话人对有关行为或事物的态度和看法, 认为其可能、应ຫໍສະໝຸດ 或必要等; 或用来表示推测或判断。