Some jewels were found in a box by us.我不是叫你幫我改這個句子，是幫我找這個習(xí)題的答案，我只是舉了其中一個題- - 。你說的練習(xí)題在哪啊? 我只看到了這一個題. 請說明白一些.我的意思不是叫你幫我改這一個句子，而是叫你幫我找這個題后面的題，有很多道，然后我要那些題得答案....不懂就繼續(xù)追問我吧.....動句轉(zhuǎn)被動句1 his mother told him not to waste time on fishing.2 Father gave me a toy at Christmas.3 This factory produces machine tools.4 They should do it at once.5 He is likely to let you down.6 They named the child tom.答案1 He was told not to waste time on fishing (by his mother).2 I was given a toy at Christmas (by my father).3 Machine tools are produced in this factory.4 It should be done at once (by them).5 You are likely to be let down.6 The child was named tom.以上幾個例子都是從語法書摘抄的。代表了幾種不同形式的被動變法。1\2是不同的動賓短語中賓語變被動；3是一般句子變被動；4是情態(tài)動詞變被動；5是不定式變被動；6是主—動—賓—補結(jié)構(gòu)的主動句變被動。