Unit 1 Discover useful structures 课件-2023-2024学年高中英语人教版（2019）选择性必修第二册

Revision Q1. In Para.2, what were the two contradictory theories doctors had in those days? Q2. In Para.3, why did the women and her daughter die of cholera after moving away from Broad Street? Q3. What was “the truth” mentioned in Para.4? Q1. In Para.2, what were the contradictory theories doctors had in those days? Q2. In Para.3, why did the woman and her daughter die of cholera after moving away from Broad Street? Q3. What was “the truth” mentioned in Para.4? One theory was that bad air caused the disease. Another was that cholera was caused by an infection from germs in food and water. It seemed that the woman liked the water from the pump so much that she had it delivered to her house every day. The truth was that water from the Broad Street pump had been infected by waste. Revision 1. One theory was that bad air caused the disease. 2. Another was that cholera was caused by an infection from germs in food and water. 3. It seemed that the woman liked the water from the pump so much that she had it delivered to her house every day. 4. The truth was that water from the Broad Street pump had been infected by waste. Explore: Observe and find — Subject Subject Subject Subject Linking verb Linking verb Linking verb Linking verb Predictive clause(表语从句） Predictive clause(表语从句） Predictive clause(表语从句） Predictive clause(表语从句） PC that, whether, how,where, what, as if... The basic form of Predicative Clause: Subject+Linking verbs+[subordinating conjunction+other elements] be,seem,appear,look,sound... What is the sentence structure ? that, whether, how,where, what... Predicative Clauses are often used: 1. to directly explain or emphasize what the Subject is in greater detail. 2. function as a Complement (补语) to the Subject. Unit 1 Science and Scientists Linking-v系动词 Contents 1 Subordinating conjunction引导词 2 3 Practice and Apply练习与运用 4 Attention注意事项 系动词的