it 作形式主语、形式宾语、it开头的短语教学提纲

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America. • It appears that they won't be able to come at all.
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It 作形式主语 5. It + be + 形容词 +（for sb.）+ 动词不定式 • 常用形容词easy, difficult, hard, important,
It作形式主语 1. It + be + 形容词+主语从句 • It is uncertain whether he can come to Jenny’s
birthday party or not.
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It作形式主语 2. It + be + 名词词组(+for sb.) + 主语从句 这类名词有：a fact, a pity, a shame, an honor，a
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It 作形式主语 4. It + 不及物动词(seem, appear, happen, occur 等)
+ 主语从句
• It seemed that he didn’t tell the truth. • It happened that I was out when he called. • It never occurred to me that I would travel to
possible，wise等作表语
• It’s necessary for the young to master two foreign languages.
• It is unwise to give the children whatever they want.
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It 作形式主语 6. It + be + 形容词 + of sb. + 动词不定式 • 形容词：kind, nice stupid, clever, foolish, polite,
It takes courage to live.
适应环境需要力量。 与众不同需要勇气。 感觉朋友的痛需要力量。 感觉自己的痛需要勇气。 隐藏自己的痛需要力量。 展示自己的痛需要勇气。
生存需要力量。 生活需要勇气。
2
It作形式主语
动词不定式，动名词或主语从句作主语时， 通常把它们放在谓语动词前，而用it作形式 主语，放到句首。
• =He seemed selfish not to share his dictionary with others.
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It 作形式主语 • 7. It + be +名词词组+ 动词不定式，如： • It is not a good habit to stay up too late.
impolite, silly, selfish, considerate等
• It’s very kind of you to help me with the work. =You are kind to help me.
• It seemed selfish of him not to share his dictionary with others.
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It 作形式主语 • 9. It + take ( sb. )+ 时间（金钱）+ 动词不定式 • It took the workers almost three years to finish
building the dam. • It will take a whole day to get to the top of the
mountain on foot.
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练习题
1. In fact， D is a hard job for the police to keep order in an important football match.
A. this
B. that
C. there D. it
It + be + 名词词组（+ for sb.）+ 动词不定式
question等。
• It’s a pity that you missed the exciting football match.
• It remains a question whether he will come or not.
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It作形式主语 3. It + be + 过去分词 + 主语从句 • 这类过去分词有：announced, believed, expected,
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Biblioteka Baidu
It 作形式主语 8. It + be + 名词或形容词 + 动名词， • 名词和形容词：good, no good, no use, a waste of,
useless, senseless, no hope, hopeless等 • It’s a waste of time talking to her any more. • It is no use arguing about the matter with him.
hoped, decided, reported, said, shown等。
• It is reported that 16 people were killed in the earthquake.
• It is not decided who will give the operation to the patient.
语法辅修
刘爽
Strength & courage
It takes strength to fit in. It takes courage to stand out. It takes strength to feel a friend's pain. It takes courage to feel your own pain. It takes strength to hide your own pain. It takes courage to show them. It takes strength to survive.