no后面跟名词为什么有时候用复数形式有时候用单数呢?no修饰复数名词做主语时,谓语单数复数都可以吗?
no后面跟名词为什么有时候用复数形式有时候用单数呢?no修饰复数名词做主语时,谓语单数复数都可以吗?
2、-------from other continents for millions of years ,Australia has many plants and animals not found in any other country in the world.ABeing separated BHaving separated CHaving been separated DTo be separated为什么答案不能选B呢,像:when the spaceship separated from the rocket ,i suddenly got a feeling of soaring into the sky,这里就没有be