14．Only when he returned from the exchange program          how much he enjoyed it．（　　）
A．had he realizedB．he realizedC．did he realizeD．he had realized

分析 只有當(dāng)交換生項(xiàng)目結(jié)束回來(lái)之后他才意識(shí)到他多么喜歡它．

解答 答案是C．本題考查倒裝；題干中是"Only+狀語(yǔ)（從句）"放在句首，（主句）句中用倒裝語(yǔ)序，因此排除B和D；A項(xiàng)是過(guò)去完成時(shí)，表示"過(guò)去的過(guò)去"，realize是在return之后，不能用過(guò)去完成時(shí)，故排除A選C．

點(diǎn)評(píng) 本題考查倒裝，要積累相關(guān)倒裝的規(guī)則，分清完全倒裝和部分倒裝；最后結(jié)合語(yǔ)境判斷．

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