14．I______ this Christmas tree．It will look good when it's finished．（　�。�
A．have decoratedB．have been decorating
C．had decoratedD．decorated

分析 我一直在裝飾這顆圣誕樹，完成后它將會很好看．

解答 答案：B
解析：A：現(xiàn)在完成時；B：現(xiàn)在完成進(jìn)行時；C：過去完成時；D：一般過去時．根據(jù)后面"完成后它將會很好看"可知"裝飾從過去的某一時間點(diǎn)持續(xù)到了現(xiàn)在，且還在進(jìn)行"，故該使用現(xiàn)在完成時進(jìn)行時；因此結(jié)合所給選項(xiàng)分析可知，本題答案為B選項(xiàng)．

點(diǎn)評 本題考查時態(tài)，做此類題目時一定要仔細(xì)分析句子結(jié)構(gòu)并根據(jù)句意確定所需時態(tài)，再結(jié)合所給選項(xiàng)分析確定最終答案．

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