1、主语:是句子要说明的人或物,可以作主语的成分有名词,主语一般在句首。注意名词单 数形式常和冠词不分家! 1) Mr. Lee is a well-known scientist.名词作主语 2) He reads newspapers everyday.代词作主语 3) Two and ten is twelve.数词作主语 4) Smoking is harmful to the health.动名词作主语 5) To swim in that pool is a great pleasure.动词不定式作主语 6) What we shall do next is not yet de