When a pencil is partly in a glass of water, it looks as if it _______.
A． breaksB．has brokenC．were brokenD．had been broken
C
本題考查的是as if 引導(dǎo)的讓步狀語從句中的語氣問題，as if引導(dǎo)的狀語從句如果與事實一致，不用虛擬語氣，如果與事實相反，應(yīng)用虛擬語氣。題中“當鉛筆的一部分浸在水中，鉛筆看上去好像斷了”。而實際上鉛筆并未斷，與事實相反，前半部分陳述是一般現(xiàn)在時，因而本句是對一般現(xiàn)在時的虛擬，用were broken。
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