In "I think it impossible for man to live on the Mars" "it" is the ______ of the sentence
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In "I think it impossible for man to live on the Mars", "it" is the ______ of the sentence.
A．real subject
B．real object
C．formal subject
D．formal object
请帮忙给出正确答案和分析，谢谢！
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正确答案：D
it用法题。作宾语用的短语或从句之后有接宾语补足语时，必须将用作宾语的短语或从句放在补语之后，用it代替它原来的位置，这个it称为形式宾语。题中的it用来代替think的真正宾语toliveontheMars，故答案为D。