状语从句省略的例子如下：
1、Don'tspeakuntil(youare)spokento.
2、I'llbuyaTVsetif(itis)necessary.
3、While(Iwas)walkingwalkingaloneinthestreet,Iheardmynamecalled.
4、while(theyare)visitingthecity.
5、when(hewas)askedwhyhewaslate,hekeptsilent.
6、Videogamescanbeapoorinfluenceif(theyare)leftinthewrongplace.
7、When（oneis）offeredhelp,oneoftensays“Thankyou.”or“It'skindofyou.”
8、If(itis)possible,wewilltakeataxi.
