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1、Unit2 Ways to go to school Part B Lets learn1 1沐风课教沐风课教 lighttraffic lights lights2 2沐风课教沐风课教They are traffic lights.3 3沐风课教沐风课教What colors are they?redyellowgreenalight4 4沐风课教沐风课教What colour is the traffic light?Can you guess?5 5沐风课教沐风课教What does the red light mean?Stop and wait at a red light.表示表示
2、的意思的意思6 6沐风课教沐风课教What colour is the traffic light?7 7沐风课教沐风课教What should we doWhat should we do when the traffic light is green? when the traffic light is green?Go at a green light.8 8沐风课教沐风课教What color is the traffic light ?9 9沐风课教沐风课教What should we do when the traffic light is yellow?Slow down and
3、 stop at a yellow light.1010沐风课教沐风课教Slow down and stop慢下来并停下。慢下来并停下。小贴士小贴士：slow(反义词反义词)fast down(反义词反义词)up1111沐风课教沐风课教Game time1212沐风课教沐风课教Slow down and stop!Stop and wait!Lets go!1313沐风课教沐风课教1414沐风课教沐风课教1515沐风课教沐风课教1616沐风课教沐风课教1717沐风课教沐风课教1818沐风课教沐风课教1919沐风课教沐风课教What are they?Slow down and stop at
4、yellow light.Stop and wait at a red light.Go at a green light.They are traffic rules.交通规则交通规则2020沐风课教沐风课教Mike:Mike: Look! The park is Look! The park is over thereover there! Lets go! Lets go!Mrs Smith:Mrs Smith: Please wait! Please wait! Its red now. Its red now. We We mustmust stop and wait. stop a
5、nd wait.nature parknature park必须必须必须必须在那儿在那儿在那儿在那儿2121沐风课教沐风课教如何用如何用must表示必须做某事表示必须做某事句型结构：主语+must+动词原形（+其他）Must 是情态动词，意为“必须”，语气很强烈，没有人称和数的变化，后面接动词原形。例：We must finish our homework first. 我们必须先完成我们的家庭作业。2222沐风课教沐风课教1.If the light is red, you must_.2. If the light is green, you must_.3. If the light is yellow, you must_.Slow down and stopgoStop and wait2323沐风课教沐风课教
