Question

英语一般句怎么变从句？

Answer 1

1.把陈述句变为宾语从句用that引导，that常可省略
They hope. She can help them.(变为含有宾语从句的复合句)
They hope that she can help them.=They hope she can help them.
2、一般疑问句作宾语从句时用if（是否）或whether引导
I don't know. Have they made a plan? (变为含有宾语从句的复合句)
I don't know if/whether they have made a plan.
注意1：宾语从句的语序必须是陈述句语序
3、特殊疑问句作宾语从句时用疑问词来引导，此时疑问词变为了连接代词如：what, which, who, whose和连接副词how, when, where, why等。语序要还原为陈述句语序
①Jack asked. What was John doing at that time? (变为含有宾语从句的复合句)
Jack asked what John was doing at that time?
有时特殊疑问句的语序本身就是陈述的，则不必还原
②Mary asked. What was the matter with the radio? (变为含有宾语从句的复合句)
Mary asked what was the matter with the radio. （What 是主语）
4、感叹句作宾语从句时用感叹词what和how引导, 语序不变
I said .How big the room is! (变为含有宾语从句的复合句)
I said how big the room was.=I said what a big room it was.
注意2：宾语从句的时态通常和主句的时态一致。主句的主语是一般过去时，从句用过去时的某种时态，即：一般过去时、过去进行时、过去将来时、或过去完成时。主句的谓语动词是一般现在时，从句可以是各种时态
但是当从句是不随时间改变的客观真理时仍用一般现在时
The teacher told us the earth moves around the sun.
请采纳。

追问

比如she will buy a car tomorro呢？