bengan to throw
问题描述：
bengan to throw
答
应该是 began to throw 吧.
begin to throw是“开始扔”的意思,例如"Roger gathered a handful of stones and began to throw them." 意为：Roger收集了一把石子,开始向他们扔去.
另外,begin to throw up+sth表示开始出现……问题/情况.例如The changes in the computer world began to throw up problems.电脑世界的变化开始产生问题.
如果begin to throw up后面不加宾语的话,表示“开始呕吐”,因为throw up这个短语有“呕吐”的意思.