這個(gè)句子主句tell后接雙賓語(yǔ)you和XIAO WANG could do the job,因此主句有兩種改法：
1.You were not told (by me) that XIAO WANG could do the job.
2.That XIAO WANG could do the job was not told to you (by me).注意不要忘了前面的that,整個(gè)that從句作主語(yǔ),沒有that就不是從句了,這樣一個(gè)句子出現(xiàn)兩套主謂是不對(duì)滴（不算從句）.
從句也可以改：
I did not tell you the job can be done by XIAO WANG.
還可以各種排列組合.感覺改從句比較自然.