【正文】
后元音: /ɑ:/ /?/ /?:/ /?/ /U:/ 口張大,舌身平方后縮,舌尖離開下齒,口 由大到小,雙唇收的越來越圓,后兩個(gè)嘴唇向前突出。 請(qǐng)寫出課文中出現(xiàn)的動(dòng)詞過去式 的動(dòng)詞原形: Visited did went sent liked walked Were took 前元音: /i:/ /?/ /e/ /?e/ 發(fā)音要點(diǎn):舌尖抵住下齒背,舌的前部 向硬腭抬起, 嘴唇向兩邊拉開,口形由小到大,舌位由高到低?!吭偃纾?Did you go to the Great Wall last Sunday?Yes,I ?是的,我去了。類似的還有: Who went to the Great Wall?誰去長(zhǎng)城的? When did they go?他們什么時(shí)候去的? How did they go?他們?cè)趺慈サ??】練?xí):