UC知道几道英语题解析
来源：百度知道 编辑：UC知道 时间：2024/06/15 09:56:10
1、After he finished writing the letter, he (went on to to send) it.说出为什么是括号里的答案，请解析一下，谢谢！
2、Sorry,I forgot (to post)the letter this morning,I'll remember to post it this afternoon. 说出为什么是括号里的答案，请解析一下，谢谢！
3、I（haven't written ) to him since I (came ) to Nantong two months ago.说出为什么是括号里的答案，请解析一下，谢谢！因为后面是two months ago 为什么还用完成时？
2、Sorry,I forgot (to post)the letter this morning,I'll remember to post it this afternoon. 说出为什么是括号里的答案，请解析一下，谢谢！
3、I（haven't written ) to him since I (came ) to Nantong two months ago.说出为什么是括号里的答案，请解析一下，谢谢！因为后面是two months ago 为什么还用完成时？
第一个 因为写信和寄信不是同一件事情，所以要用 go on to do而不是doing
第二个 忘记了去做某事是forget to do ，忘记是否做过则是forget doing
第三个 一般带了since 都用完成时