【正文】
lions of and 用于肯定的陳述句中 。 or或者用于否定的列舉 。 but但是表示轉(zhuǎn)折 句型 :How long have / has sb. done(持續(xù)性動(dòng)詞過(guò)去分 詞 ) sth. 三副詞近義 :perhaps大概 ,或許 放于句子開(kāi)頭 probably大概 放于 be,行為動(dòng)詞前 ,情態(tài)動(dòng)詞后 。, maybe也許 放于句子開(kāi)頭 be in good health=healthy be in bad health It is important to do sth. Sb. stop doing sth.