二、对谓语动词的强调
It is/was ...that ...结构不能强调谓语，如果需要强调谓语，用助动词do，did或does。
Do accumulate some evidence during your stay there.
你在那里期间务必要积累一些证据。
He does come from a small village.
他的确来自一个小村庄。
The report did reveal that workers had been exposed to high levels of radiation.
报告的确披露了工人们受到了高强度的辐射。
[即时演练3] 用助动词do的适当形式填空
①Do be quiet，for the baby is sleeping.
②I did tell him about it yesterday.
③Mr.Smith does run every morning.
