She is now a actress.的now为什么放在is的后面,而不是句首/尾?

(she is brushing her teeth now )的否定句是 She is now in a delicate condition.的中文翻译 I don't know how she is now.为什么是how she is 而不是how is she呢? 这种将NOW放在be动词后面的用法叫什么啊,now放在句中应该怎样放啊,我一般放在句头和句尾 she is () better now He is now working at a bank 请问NOW为什么可以放系动词后 Now it is on a flower.改一般疑问句,Now还可以放在开头吗? She is ________ a _________ now She is ________ a ________ now 照相 She is writing a letter now 填入句中所缺的词:1,Ｓhe is now ( )the bed for a guest.2,Do not( )nois 她现在在中国. She is( ) ( ) now.