发布网友 发布时间:2022-05-02 01:14
共5个回答
热心网友 时间:2022-06-26 01:00
if 解释为“如果”,引导条件从句,从句时态用过去时,主句谓语用would加动词原形;当表示过去情况的虚拟条件句时,条件从句的谓语用过去完成时,主句谓语用would have加过去分词。热心网友 时间:2022-06-26 01:01
1. 当“if”作“如果、假如”讲,引导条件状语从句时,常常用一般将来时态与之搭配。 如: If it rains tomorrow, we will stay at home. If he doesn't come on time, I'll go myself. 2.当“if”作“是否”讲,引导宾语从句时,其具体时态要和主句一致。 如: Do you know if we'll have sports-meeting next week? He asked me if I was 15 years old. My mother asked me if I had finished my homework. The teacher asked us if we would have a rest.热心网友 时间:2022-06-26 01:01
if解释为如果时后面用一般现在时热心网友 时间:2022-06-26 01:02
主句将来时,if条件句一般现在时。(如果)其他要根据实际情况变化。热心网友 时间:2022-06-26 01:03
虚拟语气中if 和as if 后时态退后一步