用一个单词表示twice a year

用一个单词表示twice a year 用一个单词表示twice a year twice a year 中twice的词性 twice a year的意思 once half year,twice a year I visit them twice a year.twice划线提问 They have an English contest twice a year.对twice a year提问 How often have they been to Italy for a holiday?A Twice B Twice a year 一个选择：After the new machine was introduced,the factory produced( ) shoes in 2009 as the year before.A,as twice manyB,as many twiceC,twice as manyD,twice many as我感觉选A 呵呵 请用以下单词写一个句子：Mike ,ball games ,twice a week 英语选择Professor Lee visits China almost __.​ A.twice a yearA.twice a year B.a twice year C.a year twice D.a year two times 画线句提问We plant trees twice a year.twice 被画线 a room where we can sleep用一个单词表示 not inside a building 用一个单词来表示 They have produced ____they did last year.A twice as much grain as B twice more grain asC twice as many grain asD as twice much grain as 英语翻译一年两或三次 为什么用 Two or three times a year 而不是用 twice or three times a year 英语用动词填空He_____to the twice a week last year.The asked us _____football with them in the street This year my father is twice my age.这个表示倍数的结构为什么不加as,即This year my father is twice asmy age.