#V粉语法营# 基础语法一点通：不定词当主语，如： To please everyone at the same time is impossible. 这句话也可以用假主词it代替，如：It is impossible to pleaseeveryone at the same time.再比如，To protect environment is important.可改为：It is important to protect environment.其否定形式是not toV，如：Not to depend on others is thebest way to success.不定词放在疑问词之后是疑问词 toV，如：How toreduce the costs is a big problem. 例：I don`t know whether to laugh or get angry. 来源：网络。