3、)thereisnopointindoingsth.做某事没有意义。Thesailorswereonthepointofgivingup______thecaptaincameup.A.when B.while C.as D.becauseBeonthepointofdoing…when…是固定句式。When在此处表示“在那个时候”=andatthattime此时不能用其他词(as/while)代替。拓展:句型(1)beabouttodo……when……(2)bedoing……when……(3)have/haddone…….when……3. i
4、gnore(vt.)不理睬;忽视词性拓展:ignorant adj. 无知的;不知的 ignorance n. 无知;愚昧用法:(1)ignoresb./sth.忽视某人/某物(2)beignorantofsthhe________thedoctor’sadviceandgoesonsmoking.Iwas________ofthefactthatthebosscouldbesostrict.(ignores;ignorant)4.clam adj. 平静的;镇静的;沉静的youshouldkeepclamintimeofdanger.区别:s