聽力課堂英語六級頻道為各位備考六級的同學們，整理了2021年英語六級作文模板:表起伏，希望對大家有所幫助，一起來看一下吧！
表起伏
1.…to go up and down …起伏不定
eg. The strike rate went up and down during the period from 1952 to 1967.
2.There be ups and downs …有起有伏
eg. Between 1972 and 1979, there were several ups and downs in (某方面).
