英文問題 ...NOT VERY OFTEN

書的答案才是對的，將一個肯定句(positive sentence)變成一個否定句(negative sentence)不是就這樣加not就可以，要視乎句子本身有沒有助動詞而定，如：
Your are a policeman.=>You aren't a policeman.
I have finished my work.=>I haven't finished my work.
但如果句子本身沒有助動詞，就要加上助動詞，然後才可加not：
We go swimming.=>We don't go swimming.
She has her lesson.=>She doesn't have her lesson.
同樣地，
We seldom go to DISCO these days.
=>We don't very often go to DISCO these days.

2個答案都OK丫 because SELDOM =NOT VERY OFTEN