That/this is the year of 2020 when COVID-19 broke out in Wuhan.That/this is in the year of 2020 when COVID-19 broke out in Wuhan.老师说第一个的先行词the year of 2020,第二个也是，可是第二个有in啊，为什么都用when呢
...hing for 1.2 billion people.老师我想问一下这里的which非限制性定语从句都能修饰什么？能修饰某个动词吗？能修饰前面其中的一部分比如to feed 22 percent of the world ’s population吗，因为我觉得has used only 7 percent of the world ’s cultivated ...
She began to learn painting at an early age and has a broad knowledge of traditional Chinese painting, which, combined with he active personality and perfect spoken English....这里which 前后都有逗号，是代表什么呢？还是非限制性定语从句吗？那引导什么呢？
...studying abroad was quite helpful to May.我分析的是：what引导主语从句，在主语从句中作talked about的宾语，但是maintaining reasonable
expectations when studying abroad这个名词短语作什么成分？也是作talked about的宾语吗？如果是，talked about不就有两...
在主句为一般过去时的句子中 as though 引导的状语从句如果用虚拟语气谓语可以不是 have done 而是 did 吗?But what else could they do on that dark winter's day when the last of
their store of grain was gone, when the trees were cut and sold, when he had
sold everything,...
1. Tom’s father died on May 1st, but the day before then he had looked pretty well. Tom’s father died on May 1st, the day before when he had looked pretty well.2. My uncle works on a farm, and in front of it there is a lake . My uncle works on a farm, in front of whic...