The boy is aways sit in the first row哪里错了

问题描述:

The boy is aways sit in the first row哪里错了

The boy is always sitting in the first row.为何+ing因为前面有be动词,所以这里的动词sit要变为ing形式,构成现在进行时。be always 为何前面加bebe 是系动词,在这个句子中作谓语动词。