The window frames had begun to warp.
窗框已經(jīng)開(kāi)始變形。
He had begun to feel sleepy.
他已覺(jué)得困了。
The gold colouring had begun to rub off.
金黃色已經(jīng)開(kāi)始剝落了。
She had begun to be a little bored with novel writing.
她開(kāi)始對(duì)寫(xiě)小說(shuō)有些厭倦了。
The blood had begun to cake and turn brown.
血開(kāi)始結(jié)塊變黑。