overlook常指由于匆忙或没注意到而忽视ignore指故意地不理睬某人、某物in need of“需要”，为介词短语，后跟名词或代词，相当于in want/demand ofin need“在贫困中，在危难中”，后不接任何成分，相当于in demand从句主句与现在事实相反动词过去式(be的过去式用were)would/could/should/might动词原形与过去事实相反had动词过去分词would/could/should/mighthave过去分词与将来事实可能相反动词过去式/should动词原形/were to动词原形would/could/should/might动词原形课时跟踪检测见课时跟踪检测(八)
