Period 2 3a-4ccan/may/must/should + be+ 过去分词1.Amy can take good care of Gina .by Amy.Gina can be taken good care of2.You 2.You should drinkshould drink more water.more water.More waterMore water should be drunkshould be drunk by you.by you.1.He can take care of the baby.2.Lucy may draw the pictures.3.You must turn off the lights.4.They should learn English well. The baby can be taken care of by him.The pictures may be drawn by Lucy.The lights must be turned off by you.English should be learned well by them.1. You must clean your bedroom every day. Your bedroom must be cleaned every day. 2. Parents should encourage teenagers to do social work for their community. Teenagers____________________ ______________________________________.3. Can Lucy do her homework tomorrow instead? Can__________________________________________should be encouragedher homework be done tomorrow instead? 4a Rewrite the sentences according to the example.to do social work for their community.4. Do you think we must keep teenagers away from the Internet? Do you think teenagers_________________________ ______________?5. Parents should give teenagers chances to make their own decisions. Teenagers_____________________________________ ________.must be kept away fromshould be given chances to make their own decisionsthe Internet4b Fill in the blanks with the correct forms of the words in brackets. Should teenagers ___________(ask) to move out when they start working? In many Western countries, teenagers ___________(allow) to move out at eighteen. Their parents believe that they should ___________(educate) to take care of themselves from a young age. This way, when they _______(start) working they can manage their own lives. However, in most Asian so...