Watch the video in the "accent training" section and answer the questions 1-10in English and translate 11-12 into Chinese. 观看语音训练部分末尾的视频,用英文回答1-10题,将11-12题中的句子译成中文。 ` blackboard means the place on which the teachers write in class, black ` board means a piece of board that is black. ` darkroom is ______________1_______________ dark ` room is _____________2______________ ` White House is ___________ 3________________ white ` house is ____________4________________ ` English teacher is _________5________________ English ` teacher is ________6_______________ ` head doctor is ___________7_______________ head ` doctor is __________8_______________ Give two more example of “ Prefix+V.” combinations, in which the part of speech is changed by the switch of the stress( 重音位置不同,词性发生变化 ). e.g. in ` sult v. ` insult n. 9._______________ v. __________ n. 10.______________v. ______________n. What do the following sentences mean with different stresses? 11. “They are playing ` cards. ” means ____________(请译成中文) 12. “They are ` playing cards.” means ________________ (请译成中文)