◆句型转换 My application for the position was refused and it upset me. →④My application for the position was refused, 　which upset me    . (which引导定语从句) →⑤　It upset me that     my application for the position was refused. (it作形式主语) →⑥　What upset me    was that my application for the position was re-fused.(what引导主语从句)