不定式表目的和将来的是to do的最常用，也比较好的理解的用法。 to do更重要的用法是：在没有必要使用doing的情况时，一律使用to do。即doing是特例，to do英语中最常见的、最普遍的、最简便的、. Do their homework 做作业，do do their homework 确实有做作业，主语是 they ，故用 do 对do their homework中的do 进行强调：确实有做。 Means, but what does d.o.
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What's different and what's alike between these two kinds of health care providers? Do come in and sit down. 一，没有make sb to do的说法，这个没有什么理由，就是这样用。make sb do sth.
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The boys do do their homework after school every day.
Do （务必）come on time next time. He does come here every day. He did come here yesterday. Do和does的区别和用法区别是：do 是动词原形，用于第一人称、第三人称的复数 (i/you/we/they)。does 用于第三人称单数 (he/she/it) does 用于第三人称单数。do用于一般现在时且主语是复数we,they,
Do （务必）be careful next time. 这个do sth是“不带to的不定式”。也就是说：make sb do sth=make sb to do sth.
