1.副詞only置於句首， 強調方式狀語、 條件狀語、 地點狀語、 時間狀語等狀語時， 主句要進行部分倒裝。例如：
Only in a big city was it possible to buy new
wheelchairs. 只有在大城市裡才能買到新輪椅。
2.如果放於句首的only所修飾的不是狀語時， 該句不用倒裝。例如：
Only John can save me. 只有約翰能夠救我。
3.如果被only所強調的狀語為狀語從句， 該狀語從句不倒裝， 只對主句進行倒裝。如：
Only when we had studied the data again
did we realize that there was a mistake.
only + 狀語放在句首,要部分倒裝。
Only on such a trip can you learn so much about European artists. (介詞短語)
Only by this means is it possible to explain it. (介詞短語)
Only then did I realize the importance of English. (副詞)
Only when the war was over was he able to get happily back to work. (從句)
1.副詞only置於句首， 強調方式狀語、 條件狀語、 地點狀語、 時間狀語等狀語時， 主句要進行部分倒裝。例如：
Only in a big city was it possible to buy new
wheelchairs. 只有在大城市裡才能買到新輪椅。
2.如果放於句首的only所修飾的不是狀語時， 該句不用倒裝。例如：
Only John can save me. 只有約翰能夠救我。
3.如果被only所強調的狀語為狀語從句， 該狀語從句不倒裝， 只對主句進行倒裝。如：
Only when we had studied the data again
did we realize that there was a mistake.
only + 狀語放在句首,要部分倒裝。
Only on such a trip can you learn so much about European artists. (介詞短語)
Only by this means is it possible to explain it. (介詞短語)
Only then did I realize the importance of English. (副詞)
Only when the war was over was he able to get happily back to work. (從句)