Unit 3 Road safety（课件）-2025-2026学年译林版（三起）英语四年级下册

1 UNIT 3 Road safety 2 单词学习 3 road safety 4 《日期/时间》 car bus 6 traffic light 7 road 8 《日期/时间》 road safety car bus traffic light road 课文学习 10 11 12 13 14 15 16 17 知识点学习 18 1. 祈使句（交通规则与安全提示）  肯定式：以动词原形开头，表指令或建议 如 “Wait for the green light.”“Look left and right.”“Stay close!”  否定式：以 “Don't + 动词原形” 开头，表禁止 如 “Don't cross the road now.” “Don't run on the road.” “Don't stay at home all day.”  语气强化：可加 “please” 使语气委婉 如 “Please wait for me.”“Don't run, please.” 2. 情态动词 “can/can't”（交通许可与禁止）  表 “可以；能够”（许可）：主语 + can + 动词原形 如 “We can take a bus.”“We can cross the road now.”  表 “不可以；不能（” 禁止）：主语 + can't + 动词原形 如 “We can't go at red lights.”“We can't run on the road.”  问答句型：A: Can we cross the road? B: Yes, we can. / No, we can't. （A：我们可以过马路吗？B：可以。/ 不可以。） 3. There be 句型（道路场景存在表达）  肯定句：There is + 单数名词 / 不可数名词 + 地点状语 如 “There is a bus on the road.”“There is a traffic light at the corner.”  否定句：There isn't + 单数名词 / 不可数名词 + 地点状语 如 “There isn't a bike on the road.”  复数形式：There are + 复数名词 + 地点状语 如 “There are many cars and buses on the road.”“There are ducks on the road.” 4. 介词 “on/in/take”（交通方式与场所搭配）  介词 “on”：用于道路、交通工具表面 如 “on the road”“on the bus”（强调在交通工 具上） 介词 “in”：用于封闭交通工具内部（拓展） 如 “in the car”“in the taxi” 动词 “take”：用于表达 “乘坐交通工具”，后接交通工具名词 如 “take a bus”“take ataxi”“take a train” 复习与巩固 23 24 25 $