作业帮 > 英语 > 作业

有两句句子:1 He will not come unless invited.2 He is unwilling to

来源:学生作业帮 编辑:搜狗做题网作业帮 分类:英语作业 时间:2024/07/31 15:42:14
有两句句子:1 He will not come unless invited.2 He is unwilling to deliver to public speech unless invited to.为什么第二句有to 第一句没有呢 第一句补全句子后就是unless invited to come 省略句保留to才对啊 请说明
有两句句子:1 He will not come unless invited.2 He is unwilling to
1. He will not come unless (he is) invited ( to some place).
2. He is unwilling to deliver to public speech unless (he is) invited to (deliver...).
两句的区别在于invite后面省略的词性不同.(1)中to为介词,跟着名词(place)使用,名词不再,介词就没有存在的意义.况且句中没说是哪里.(2)中to为不定式的符号,也就是说invite后省略的是动词不定式,这种省略保留to.再如:I'd love to.