是的
do
v.aux.(助动词)
Used with the infinitive withoutto in questions,negative statements,and inverted phrases:
用于疑问句、否定句和倒装句:跟不带to 的不定式连用,见于问句、否句、倒装句中:
Do you understand?I did not sleep well.Little did we know what was in store for us.
你懂吗?我没睡好.我们不清楚留给我们的是什么
Used as a means of emphasis:
用以强调:
I do want to be sure.Do be still!
我确实想肯定.安静!