頻度副詞是副詞的一種,在初中階段常用的有四個(gè),即always,usually,often,sometimes.現(xiàn)將它們的用法歸納如下:
一、頻度副詞在句中的位置.
頻度副詞在句中習(xí)慣上位于be動(dòng)詞、助動(dòng)詞之后,行為動(dòng)詞之前.如:
1.She is often late for school.她上學(xué)經(jīng)常遲到.
2.He usually goes to bed at about 12.他通常(午夜)十二點(diǎn)鐘睡覺(jué).
3.When do you usually get up in the morning?早上你通常什么時(shí)候起床?
sometimes是個(gè)特殊的頻度副詞,既可以放在be動(dòng)詞、助動(dòng)詞之后,行為動(dòng)詞之前,也可以放在句首,還可以放在句尾.如:
1.I sometimes think that it is a great mistake.我有時(shí)想這是一個(gè)大錯(cuò).
2.Sometimes I help my mother in the house.有時(shí)候我?guī)椭鷭寢屪黾覄?wù).
often可以放在句中,也可放在句尾,習(xí)慣上不放在句首.如:
We have been there quite often.我們經(jīng)常到那兒去.
這些頻度副詞的位置與句中謂語(yǔ)動(dòng)詞有無(wú)助動(dòng)詞有關(guān).句中沒(méi)有助動(dòng)詞時(shí),副詞置于動(dòng)詞be之后,其它動(dòng)詞之前.
二、表示頻度方面的區(qū)別.
always是頻度最大的詞,意為"總是；永遠(yuǎn)".如:
I shall always remember my first day at school.我將永遠(yuǎn)記住我上學(xué)的第一天.
usually意為"通常",即很少例外,頻度僅次于always.如:
What do you usually have for breakfast?你通常早餐吃什么?
often意為"經(jīng)常",在頻度上不如usually那么頻繁.如:
Li Ping often does his homework in the afternoon.李平經(jīng)常在下午做作業(yè).
sometimes意為"有時(shí)候",頻度比often小,表示動(dòng)作偶爾發(fā)生,間斷較大.如:
1.I sometimes go to the library.我有時(shí)去圖書(shū)館.
2.Sometimes I read a book in the evening.我有時(shí)在晚上看書(shū).
三、頻度副詞與not連用時(shí),表示部分否定；對(duì)頻度副詞進(jìn)行提問(wèn)時(shí),要用how often.如:
1.A great scholar is not always a very wise man.大學(xué)者未必一定是極聰明的人.
2.We go to the cinema sometimes.(對(duì)劃線(xiàn)部分提問(wèn))
How often do you go to the cinema?