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注意：1为避免主语冗长句子头重脚轻经常用it作形式主语主语从句放在后面作真正的主语。记住以下it作形式主语的句型：It’slikelypossibleimporta
t
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2单个的主语从句作主语时，谓语动词用句单数形式；如果是两个或两个以上的主语作主语，谓语动词则视情况而定。Whe
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2表语从句：在复合句中作主句的表语。引导词有连词thatwhetherasifasthoughwhowhatwhichwhosewhe
wherehowwhybecause等。如Theproblemis_________wedid
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touchwithhimThisis_________He
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注意：1如果句子的主语是suggestio
adviceorderdema
dproposal等名词时后面引导的表语从句用should动词原形should可省略。他的建议是我们应该马上完成工作Hissuggestio
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isthat……的理由是，…的原因是…Thereaso
__________hewaslateagai
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