He can often play the piano.
頻率副詞放在情態(tài)動詞,助動詞,Be動詞之后,實義動詞之后.
1.頻率副詞是表示與次數(shù),頻率有關(guān)的副詞,如:
always(總是),usually(經(jīng)常),sometimes(有時),seldom(不常),once(一次),twice(兩次)等.
2.頻率副詞用在be動詞后.
It is usually hot in summer.
夏天天氣通常是熱的.
3.頻率副詞用在主要動詞前.
My father usually walks home.
我的父親經(jīng)常步行回家.
4.頻率副詞用在助動詞與主要動詞之間.
I will always love you.
我將永遠愛你.
5.頻率副詞用在OUGHT TO之間.
You ought often to write to your mother.
你應該常給你母親寫信.
6.在答句中,頻率副詞必須放在助動詞前.
Do you often go there?
你常去那里嗎?
(誤)Yes,I do often.
是的,我常去.
(正)Yes,I often do.
是的,我常去.
7.never(從不),seldom(很少,不常)用于句首時,句子要用倒裝形式以加強語氣.
Never have I been there.
我從未去過那里.
Seldom do I watch TV.
我很少看電視.