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师:请同学们设想一下,如果有一天太阳没有了,地球上将会产生什么样的后果?(板书:太阳) 生:地球上将会一片黑暗。 生:地球上会很寒冷。 生:地球上所有的植物、动物都将灭绝。
Teacher: Imagine the students will imagine if the sun does not exist one day, what the consequences of the Earth will have? (Blackboard: Sun) Health: Earth will be a dark. Health: Earth will be very cold. Health: All the plants and animals on earth will be extinct.