频率副词的用法二.doc

頻率副詞的用法及其問句：英語中的頻率副詞有：always（总是）, usually（經常）, often（常常）, sometimes（有時候）, seldom（很少）, never（从来沒有）等。這些頻率副詞】对于一个动作发生的次數或頻率，又分別表示多少呢？参考底下附图可得知：alwaysusuallyoftensometimesseldomnever由上表可知，always 表示句中的動作發生率是 100%，而 never則是 0%，這兩個字詞中間的各字所附的圖示，是表示句中動作的概略發生頻率，僅供參考，其實也並沒有很明確的固定比率。這些詞的位置放哪兒呢？A. 放在 can, will 等助動詞之後：例：4. You can always come and play with us. 5. John will never ride his new bicycle to school.B. 放在 be 之後：例：6. They are sometimes at home on Sundays. 7. Tina is usually happy when she studies English.C. 放在一般動詞之前：例：8. He seldom plays tennis. 9. I never go to ball games, and I seldom watch them on TV.D. sometimes 和 usually 也可以放在句首：例：10. Sometimeshe plays baseball on Sunday. 11. UsuallyI get up early.当然这并不是说，要表达一个动作发生的频率或次數，只有上述的字詞而已，你也可以这样说：every + 時間：如 every morning/day/week/season等once a week/twice a month/three times a year等注意事项：在現在式中，主詞為he/she/it/name，若句中有頻率副詞時，動詞不要忘記加 s/es。疑問句：【普通動詞】Do youtheyMay and Johnalwaysusuallyoftensometimesplay basketball after school?Does heshePeterYes,I / wetheyMay and Johnalwaysusuallyoftensometimesplay basketball after school. heshePeterplays basketball after school. No, I / wetheyMay and Johndont alwaysdont usuallyseldomneverplay basketball after school.heshePeterdoesnt alwaysdoesnt usuallyplay basketball after school.seldomneverplays basketball after school. 请特别注意：seldom（很少）及never （从不）属否定语气，只会出现在否定的答句中，不会出现在问句中，也不会出现在肯定的答句中。要问一个人某动作发生的次数，其问句为： How often .?e.g. 12. 問：How often do you play basketball?答：I often play basketball twice a week.13. 問：How often does John walk to school?答：He walks to school every day .14. 問：How often does Mr. Browns son eat at McDonalds?答：He often eats there. So hes so heavy.1. 字尾加s ,es 的语音变化* S接在无声子音后面时，发无声的S 如：reefs looks *S接在有声子音后面时，发有声的z 如：jogs sings*S接在t 的后面时，念ts 如：fits students*字尾音是 的字，后面加上es 并念IZ,但如horses字尾有e则只加S，也形成IZ的音。2. 字尾加ed 的语音变化*ed 接在无声子音后面，念无声的t 如