this is a ＋名词?this is a ××××.a绝对不能省略是吗?

this is a ＋名词?this is a ××××.a绝对不能省略是吗? I must - - - - - - - this:it is a secret I guess this is a soccer field I think this a( ) is right. is this a pen?No it i(). This is a( )job.I feed( )(tire) This is a man who i said This is a( )job.I feed( )(tire) This is what I This is how I 同义句：I can‘t This watch is not ___________for me______.This watch is ________for me__________.This is an experiece watch.I can’t afford to buy it.用Such..thatsuch+a/an+adj.+可数名词单数+thatsuch+adj.+不可数名词/可数名词复 Is this a book? Yes,this is. This is a man提问( ) is this? This is a love this is a japan This is a this is a This is a book