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, · a pap smear is a procedure that involves collecting cells from the cervix for testing. Learn about symptoms of urinary tract infections. Viruses cause viral infections. Find out what causes utis, how infections are treated and ways to prevent repeat utis. Do强调句型的用法：就把助动词do放在谓语前面，主要用于陈述的肯定句。如果否定的话，就跟普通否定句一样。 一、do强调句用法及例句 1、当句子中没有其他的助动词时，我们可以在动词前使用助动词do表示对 … Healthcare professionals sometimes call it cervical cytology. The boys do do their homework after school every day. It also is called a pap test. · 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. A pap test is often … 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. · bacteria cause bacterial infections. 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. 但英语中只说：make sb do … · you know what m. d. · pneumonia is an infection that inflames the air sacs in one or both lungs. Antiviral medicines help the body clear out … · statin side effects can be uncomfortable but are rarely dangerous. Antibiotic medicines kill or keep many bacteria from growing but dont treat viruses. Whats different and whats alike between these two kinds of health care providers? The air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, chills, and difficulty …
