作业帮 > 英语 > 作业

she heard planes passing overhead and wondered how she could

来源:学生作业帮 编辑:大师作文网作业帮 分类:英语作业 时间:2024/11/16 04:57:00
she heard planes passing overhead and wondered how she could send a signal.
请问pass为什么加ing ,wonder为什么加ed,
she heard planes passing overhead and wondered how she could
第一个是hear sb/sth doing sth 听到……正在做某事(用原形do的话表示全过程)
第二个加ed是因为wondered跟heard并列的,过去式,听到飞机飞过头顶,想知道……