可以的.

He found himself locked in the room.
是簡單句：主語+謂語+賓語+賓補(bǔ)+（地點(diǎn)）狀語

He found that he was locked in the room .
是賓語從句,連詞that 可以省略.那如果前面有時(shí)間狀語從句：when he tried to open the door ,he ____________the room.這時(shí)還可以填found that he was locked in 嗎？還是found that he had been locked in?這個(gè)應(yīng)該是 found that he had been locked in。主句是一般過去時(shí)，從句的動(dòng)作發(fā)生在過去的過去，用過去完成時(shí)。 當(dāng)他試圖開門時(shí)，他發(fā)現(xiàn)自己被鎖住房間里了?！八绘i住房間里“發(fā)生在”他試圖開門“之前，而”他試圖開門“發(fā)生在過去。