4、ense willbe+P.p won’tbe+P.p Presentperfecttense have/hasbeen+P.P haven’t/hasn’tbeen+P.P Modelverbs can/must/should+P.P can’t/mustn’t/shouldn’t+P.P 第二步让学生做链索操练如: give gave given hold held held start started started turn turned turned do did done 第三步Pairwork即让学生列举