20．He hurried to the station onlyto find（find ）that the train had left．

分析 他匆忙趕到火車站，卻發(fā)現(xiàn)火車已經(jīng)離開了．

解答 答案是to find．考查詞組only to do sth．表示結(jié)果卻是…句意是"他匆忙趕到火車站，卻發(fā)現(xiàn)火車已經(jīng)離開了．"所以only后面接不定式to find．故答案是to find．

點評 本題考查用所給單詞的適當(dāng)形式填空．首先要根據(jù)語境明確句意，然后再根據(jù)相關(guān)語法對所給單詞在形式上做出正確的變動．

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