When a pencil is partly in a glass of water,it looks as if it _______.A.breaks B.has broken C.were broken D.had been broken

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Whenapencilispartlyinaglassofwater,itlooksasifit_______.A.breaksB.hasbrokenC.werebrokenD.hadbeenbrok

When a pencil is partly in a glass of water,it looks as if it _______.A.breaks B.has broken C.were broken D.had been broken
When a pencil is partly in a glass of water,it looks as if it _______.
A.breaks B.has broken C.were broken D.had been broken

When a pencil is partly in a glass of water,it looks as if it _______.A.breaks B.has broken C.were broken D.had been broken
c
在asif,asthough 等引导表语从句 中,表示与事实相反时,要用虚拟语 气.如果有be动词,一般用were,其他的时态往前推一个时态.如:主 句一般现在时,从句中就用一般过去 时.