高二英语必修五知识点难点大全
高中学习办法其实很简单，可是这个办法要一向坚持下去，才能在终究考试时看到成效，假如对某一科目感兴趣或许有天分异禀，那么学习成绩会有明显提高，若是学习动力比较足或是受到了一些活跃的影响或影响，分数也会大幅度上涨。下面便是小编给我们带来的高二英语必修五知识点，期望对我们有所协助！
高二英语必修五知识点1
一、不定式做主语：
1、不定式做主语一般表明详细的某次动作。===动名词doing 表明习气的，常常的动作。
e.g: To finish the building in a month is difficult.
To do such things is foolish.
To see is to believe. (对等)
注: 1). 不定式作主语时,谓语用奇数
2). 当主语较长，谓语较短时，常用it做方式主语，而将不定式放到谓语的后边。
it做方式主语，不定式放在谓语动词之后常用于下列结构中：
(1)It is/was +adj.+of sb. to do…
(2) It is +adj.+for sb.+to do…
It is easy / difficult / hard / foolish / unwise / right / wrong / unnecessary
(3) it is +a +名词+ to do...
It is a pity / a pleasure / a pleasant thing / one’s duty / an honor / a shame / a crime / no easy job… to do
It takes (sb.) some time / courage / patience …to do…
It requires courage / patience / hard work… to do…
留意: probable 和 possible 均可作表语，但possible能够用不定式作实在主语， 而probable不能用不定式作实在主语。
It is probable for him to come to the meeting.(错)
It is possible for him to come to the meeting.
It is possible / probable that he will come to the meeting.
二、不定式做表语
主语是以aim duty hope idea intention plan job suggestion wish purpose task 等为中心词的名词词组 或以 what 引导的名词性从句表明，后边的不定式阐明其内容, 不定式作表语常表明将来或现在的动作或状况。
eg :My idea is to climb the mountain from the north.
Your mistake was not to write that letter.
What I would suggest is to start work at once.
三、动词不定式作宾语
以不定式结构为宾语的动词有：
ask, agree, care, choose, demand, decide, expect, fail, help, hope, learn, manage, offer, plan, prepare, pretend, promise, refuse, want, wish等只能用动词不定式作宾语
口诀(接不定式作宾语的动词)
想要学习 早方案( want learn plan)
快预备 有期望( prepare hope wish expect)
赞同否 供挑选(agree offer choose)
决议了 已容许(decide be determined promise)
极力去 着手做(manage undertake)
别回绝 别伪装(refuse pretend)
失利不是归于你(fail)
e.g.Tom refused to lend me his pen.
We hope to get there before dark.
The girl decided to do it herself.
留意:某些及物动词可用-ing也可用动词不定式作宾语但意义不同的有
stop go on remember forget
regret try mean can’t help
be used to
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