1、Topic 3,Would you like to be a greener person?,Work for 为工作,We should work for our motherland to make her stronger and more beautiful.,Encourage “鼓励”,Encourage sb to do sth 鼓励某人做某事 The teacher often encourages us to study hard at English. The government encourages people to plant more trees.,Be supp
2、osed to do sth,“ 应当做某事，应该做某事” You were supposed to be here an hour ago. I thought you were supposed to get here a little earlier.,While,“但是，然而” She is a very pretty girl while it is difficult for her to get on well with others.I have read a lot of books while he hasnt.,“ 在什么时候，在什么期间” While we were talking, the teacher came in.,Efficient adj 效能高的，有能力的,Many modern machines are very efficient.A good secretary must be smart and efficient.,Be used for doing sth,“被用于做某事” = be used to do sthWood is used for making paper. = Wood is used to make paper.,
