(I) 规则动词的过去式变化规则（ 1 ）一般情况下，动词词尾加 -ed ，如：worked played wanted acted（ 2 ）以不发音的 -e 结...
Lesson 1Chinese people have been dreaming of flying into space and there are many fairy stories about flying int...
Lesson1Chinesepeoplehavebeendreamingofflyingintospaceandtherearemanyfairystoriesaboutflyingintospace,suchas“Chang’erBenyue”.Why...
(I)规则动词的过去式变化规则（1）一般情况下，动词词尾加-ed，如：workedplayedwantedacted（2）以不发音的-e结尾动词，动词词尾加-d，如...
