请认真阅读下列材料，并按要求作答。[图1]
依据拟定的教学目标，设计导入和操练环节的教学活动并说明理由。
①Lead-inTo make the class attractive and effective,I will start the lesson with singing a song,and I will also ask them to imagine that they are in the fields now.In this way,students are more likely to get interested in the class and follow my teaching thought from the beginning.It’s convenient for me to introduce the following topic.②PracticeIn order to help them master the words and sentences,I will show the cards to my students.Students will be asked to listen carefully and try to speak out what they have heard in their own words.I will show the unfulfilled words on the PPT and read them to students.They need to fulfill the blanks and read them by themselves.In this way,they will master the pronunciation and spelling of these words.In order to make them use the words and sentences skillfully,I will play a game in the class.I will give them a few cards with the new words and sentences.They need to pick up the relevant words and sentences from the cards.Students can practice what they've learned in a relaxed atmosphere.
