重要

onto

🇬🇧/ˈɒntə/ 🇺🇸/ˈɑːntə/📚 927 3四级考研高考
If something moves onto or is put onto an object or surface, it is then on that object or surface. 到…之上

preposition [位置和方向]到…之上,向…之上,到,朝;(建筑物、房间、门或窗)面朝,通向;发现(某人做了坏事);了解,掌握,处于有利地位;与…谈话,询问;到(交通工具)上;(重心移动)到(身体某部位)上;成为(列表、系统等)的一部分;转到(其他话题);抓住;(数)映射到的

You can sometimes use onto to mention the place or area that someone moves into.
移向 (某处)

adjective [原级]映射的,映成的,满射的

The colours rotated around on a disc and were reflected onto the wall behind.
那些色彩在一张圆盘上旋转,并被反射到后面的墙上。

onto 出现在下面的课文中(提供视频、音频及笔记等可系统性学习)
Lesson 53 Hot snake
单词造句:
网友用“Onto”造句精选
I took my bags inside, lowered myself onto the bed and switched on the TV. 我把我的包拿进去,坐到了床上,打开了电视。
At exactly 6:00 p.m., Marcia drove onto the motorway. 下午6点整,马西娅开车上了高速公路。
...the metal part of the door onto which the sun had been shining. …阳光一直照耀着的门的金属部分。
The door opened onto a well-lit hallway. 这扇门对着一个照明很好的门厅。
As he stepped backwards she fell onto her knees, then onto her face. 他往后退步时,她双膝跪倒在地,接着脸也着地。
Puffing a little, Mabel shifted her weight onto her feet. 梅布尔有些气喘,将她身体的重量移到了双脚上。
As he got on to the plane, he asked me how I was feeling. 他上飞机时问我感觉如何。
The reflector is held onto the sides of the spacecraft with a frame. 反光器被一个框紧紧地固定在宇宙飞船的各个侧面。