onto 和on to有什么区别？

Question

先说明onto 和on to 用法区别，有何不同，有何关联
再鉴别：a bird had snatched up the snack from the ground and then drapped it on to de wires.
ass this on to the next person after signing it.
He put the dictionary onto the desk.

Answer 1

1. 两者都用作介词，合写一词的 onto 在意上相当于 to＋on，即表示某物向另一物运动(to)，然后停落在另一物之上(on)。使用时两者常可换用。如：He jumped onto [on to] the horse. 他跳上马。He put the dictionary onto [on to] the desk. 他把字典放到桌上。2. 以下情况的 on to 不能合写为一词(onto)：(1) on 为副词时。如：We must walk on to the next village. 我们必须继续走路去下一个村庄。Pass this on to the next person after signing it. 签名之后请把它传给下一位。(2) on 后的 to 为不定式符号时。如：He went on to tell us an interesting story. 接着他给我们讲了个有趣的故事。He had to hang on to avoid being washed overboard. 为了不至于被冲入水里，他只好紧紧抓住不放。追问

a bird had snatched up the snack from the ground and then drapped it on to de wires.这一句的on to是哪种？

追答

翻译：
一只鸟把零食从地上抓起来,然后从电线上飞走了。此句中的on是介词，to 表示离开的方向。

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