17．he，days，three，be，here，for．
Hehasbeenhereforthreedays．．

分析 He has been here for three days．他來這里三天了．

解答 答案：He has been here for three days．．
首先結(jié)合提示詞和標(biāo)點(diǎn)符合明確所要組合的句子是一個陳述句，組合成的句子的句意是"他來這里三天了．"，結(jié)合for three days 判斷用現(xiàn)在完成時，構(gòu)成是have/has+動詞的過去分詞，故答案為：He has been here for three days．

點(diǎn)評 做連詞成句這種類型的題，首先確定句子類型，如：陳述句、疑問句或感嘆句等，然后根據(jù)所給單詞，明確主語、謂語等句子成分，在確定句意的前提下結(jié)合語法知識組合句子．

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