把书扔了英文

I have lost my book

i leave my book at school

He threw/ put the books into the bookbag. 这儿一般过去时比较好,“扔” throw---过去式 threw,也可以用put （放进）

遗憾无意中把你的书扔掉了I regret to have to throw away your book.遗憾无意中把你的书扔掉了I regret to have to throw away your book.

My book was lost at school.

I lost the book in school.

楼上的朋友, 英语里应该没有LOSTED这个说法吧. LOSE LOST LOST.....一楼的说法也是可以的,就是He lost my book.或者可以用被动,英语里用的比较多.My book was lost by him.如果楼主想强调是他弄丢了,那就用强调句式It is...thatIt is him that lost my book.