When a pencil is partly in a glass of water, it looks as if it ______.
A．breaksB．has broken
C．were brokenD．had been broken
C
as if 引導(dǎo)的句子，有時(shí)用虛擬語(yǔ)氣，有時(shí)不用。原則上說(shuō)，若指事實(shí)或可能為事實(shí)，不用虛擬語(yǔ)氣；若指現(xiàn)在，從句謂語(yǔ)動(dòng)詞用一般過(guò)去時(shí)（be 用 were）；若指過(guò)去用過(guò)去完成時(shí)，若指將來(lái)用過(guò)去將來(lái)時(shí)或用 were to do sth.
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