It is +形容词+动词不定式韩岁宁周至西宝中学 “It is +形容词+动词不定式”结构： 这个结构常用来表达对某一事件的看法。可译为“做某事 是的”。 For example: It is interesting to have a picnic in autumn. 在秋天野餐是有趣的。在上述句子中，句子的真正主语不是 it,而是整个动词不定式部分，即：to have a picnic in autumn。我们把 it 称为“形式主语”。 如图：It is interesting to have a picnic in autumn.上述句子也可改写为： To have a picnic in autumn is interesting. 秋天去野餐很有趣。 Practice 请同学们在课本45页找出所有含此结构的句子。 1 It is exciting to take a trip in spring. 2 It is nice to eat ice cream in the hot weather. 3 It is nice to go on a picnic at this time of year. 4 It is interesting to make snowmen.Homework用所给词的适当形式完成句子。 1 It is dangerous (swim) in the river. 2 It is hard (live) in the Moon. 3 It is (importance) to save water. 4 It is (excite) to watch a football game. 5 It is (nice) to take a trip with my parents.to swimto live importantexcitingniceThank you!Byebye!