The machine is such -----I have never seen before.Awhat B as

The machine is such -----I have never seen before.Awhat B as The machine is such as l have never seen before .这句话的意思是? The machine is such____A____ I have never seen before.对吗? The machine is such____A____ I have never seen before.是这个吗? I have never seen such an interesting film before I have never seen such a wonderful performance before. This is such a wonderful film ——I have never seen before What a table!I have never seen such a thing before.It is -- I have never seen such a fine painting____.A .before B.ago C I have never seen __picture before.A.a such beautiful B.so a I have never seen ———— mountain before.A.a such beautiful B. I′ve never seen such a good film before.(同义句） This is the (