问题补充:
单选题Bythetimehe____attheparty,alltheotherguests____playinggames.A.arrived; had begunB.arrived; beganC.had arrived; beganD.had arrived; have begun
答案:
A解析考查by的时态。By的用法是,by后面跟什么时态,主句就采用什么完成时,总之by是完成时的标志。 所以选择A
时间:2020-01-17 13:20:05
单选题Bythetimehe____attheparty,alltheotherguests____playinggames.A.arrived; had begunB.arrived; beganC.had arrived; beganD.had arrived; have begun
A解析考查by的时态。By的用法是,by后面跟什么时态,主句就采用什么完成时,总之by是完成时的标志。 所以选择A