基本解釋一定會做某事;務必做某事英漢例句雙語例句A. be sure to do sth.表示 “必然做某事”或“一定會……”。edu.sina.com.cnB be sure to do sth.有把握做某事,一定能乾某事。Be sure to do sth.意思是“肯定會做某事”。be sure to do sth更多例句