在雅思写作中灵活使用it

灵活地使用it，会让我们的雅思作文更地道，更具平衡美。这里上海的严春华老师给大分享一点用It 作形式主语的办法。

It 可以代指时间、天气、重量、距离，也可以代指人。所谓形式主语，是用来代替真正的主语，使句子结构更加平衡的。
It 作形式主语通常代替动词不定式短语，主语从句或者动名词短语。这是为了让句子结构更平衡。不过应当知道不用形式主语仍可表达，如to remove role ambiguity is a good idea. 但相比原句显然头重脚轻。以下给大11个小练习，你可以先用关键字自己想想看，然后再看下一行的句子构造，希望对大熟练使用it，有所帮助：）

It 作形式主语1/11
消除角色模糊是个很好的想法。
remove role ambiguity
It is a good idea to remove role ambiguity.

It 作形式主语2/11
经营一小企业比经营一大企业容易。
manage business
It is easier to manage a *all business than a large business.

It 作形式主语3/11
人们普遍认为炎热潮湿的天气里人们脾气更加急躁。
Shorter temper/ hot muggy weather
It is generally believed that tempers grow shorter in hot, muggy weather.

It 作形式主语4/11
据估计正常的男性或者女性一天平均需要七个半到八个小时的睡眠。
It is estimated that the average man or woman needs between seven-and-a-half and eight hours sleep a night.

It 作形式主语5/11
覆水难收
It is no use crying over spilt milk.

It 作形式主语6/11
每天都学些新的词汇是很值得的。
worth doing
It is well worth learning some new words every day.
It is estimated/said/expected/believed/acknowledged 表示“据….”一些固定句型有：it is no good, no use, no help, worthwhile….
人们都承认境贫寒的年轻人通常会在我们的教育体系中表现不佳。
poorer socio-economic backgrounds
It is generally acknowledged that young people from poorer socio-economic backgrounds tend to do less well in our education system.

It 作形式主语8/11
支持使用公路网络的人反对那种拥有好的公共交通体系的城市模式，这种现象很普遍。
road network/ reject the models
It is common for supporters of road networks to reject the models of cities with good public transport.

It 作形式主语9/11
人们曾经认为，随着通讯的发展，人口将会越来越分散。
telecommunications/dispersal in the population
It was once assumed that improvements in telecommunications would lead to more dispersal in the population.

It 作形式主语10/11
Eugene 从不愿意改变自己的观点，跟他争辩无济于事。 alter opinions, argue with
Eugene is never willing to alter any of his opinions. It is no use arguing with him.

It 作形式主语11/11
显然气味可以激起强烈的情感反应。
evoke responses
It became apparent that *ell can evoke strong emotional responses.