主从句的时态问题He said he would not give me a present unless I succ

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/24 14:32:27

主从句的时态问题
He said he would not give me a present unless I succeed in doing the experiment.说是一般过去时代替过去将来时,但是“succeed'
为一般现在时

unless引导的是条件状语分句.
当unless分句表示真实条件时,通常可以if...not代替.
也就是说,此句可换为：he said he would not give me a present if I not succeed in doing the experiment.
因此此句是真实条件句,
真实条件句有两种基本形式：
(If)simple present + (Main)shall /will/can/may等 +不定式,
(If)simple present + (Main)imperative
由此可以看出,当unless分句表示真实条件时,基本上是用现在时

主从句的时态问题He said he would not give me a present unless I succ I ___ that he would give me a car as a birthday present last 解析英语时态问题He would have said just the same as he had .时态的问题“wo A:He may give away a present to me.(同义句） B:A present________ My father said he would give me a surprise on my thirteenth Tom said he would be back _.A.at present B.for the present C 1.Let's give her a present.（改为同义句）() we give a present () he he didn't remember ＿the book and said he would give it to me He said that if he had a million dollars ,he would give it t He said that he would come here and( )he could give us a tal he said he must leave early 的同义句he said he would have to lea 该怎样理解这句英文?While he was in France,Terry would give me a call