----will they stay in shenzhen?--they will stay there for a

“how often,how soon,how long”三组词语都可译为“多……”,它们在表时间时很容易让人混淆。今天,我们隆重推出这三“兄弟”。A） how often how often常用于询问某动作在单位时间内所发生的次数,是对频度时间状语提问的词语。频度时间状语可以是often,usually,always,sometimes,never等副词,也可以是once a week,three times a month等副词短语。与how often相似的短语how many times（多少次）,后面常跟限定的时间,如：how many times a week / a day / a month / a year,并且要回答出次数。如：—How many times a week does he play basketball?—He plays basketball three times a week。B） how soon how soon（多久）主要用来询问某个动作在多久的将来发生,即多久,多快。它常用在将来时态中,并且用in短语（表示再过多长时间）回答。如：—How soon will he be back?—He will be back in a month。C） how long how long（多久）,主要用来询问某个动作或状态所持续的时间。how long在对句子中带有for或since等表示持续性的时间状语提问时,谓语动词不能是终止性动词。如：—How long are you staying in New York?—For two years。