高一英语非谓语动词 高手请进whether----,we will have a picnic tomorrow.A.p
高一英语非谓语动词 高手请进 whether----,we will have a picnic tomorrow. A.permit B.permits C.permitted D.permitting ----carefully,this letter is very beautiful. A,type B.typing C.typed D.to typed 请问什么时候用过去分词,什么时候用-ING形式?谢谢