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It was several years before someone came up with the idea of removing the bottom of the basket and letting the ball fall through.
网校学员傍晚天**在学习英语零基础直达PETS三级/公共英语三级【年中特惠班】时提出了此问题，已有1人帮助了TA。
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大橙子爱吃小橘子
同学你好，该知识点来自沪江网校《英语零基础直达PETS三级/公共英语三级【年中特惠班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。
同学你好~it was+段时间+before结构的意思是：距离(发生某事)有多长时间，
也就是过了几年，才有人想起来可以xxx
removing做介词of的宾语，所以要加ing
let sb/sth do sth表示让xxx 做xxx
这里让球从篮筐中穿过
there have been是there be句型的现在完成时
不可以用there been have
since后面要加时间点，这里的then就是时间点，表示那时候，连起来就是自从那时候
希望对同学有帮助~
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英语零基础直达PETS三级/公共英语三级【年中特惠班】
已有20人在本课程中发现了1277个知识
已有1024个知识得到了老师的回复
本课程热门知识点
- as a result of the delays, one man got on the wrong bus.
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There rose in his imagination visions of a world empire.
If ever again there happens an accident like that, we will have only ourselves to blame. - He will take part in an iportant race across the Atlantic.
- I have got a bird's eye view of the Palace from this window.
- swimming is said to be the healthiest form of exercise.
- She replied that she would not come.
- If you can make up your mind about the color I can start on the outside of your house early next week while right now
- the night before在这句话怎么翻译
- He crashed into the tree because he was trying not to hit a box that had fallen off the truck ahead of him.
- who 和whom的区别和使用方法