时态填空:By the time when he was 14,Einstain (teach) himself the advanced Maths. 我来答 2个回答 #热议# 上班途中天气原因受伤算工伤吗? 图门永修守昭 2020-05-13 · TA获得超过3.6万个赞 知道大有可为答主 回答量:1.2万 采纳率:28% 帮助的人:839万 我也去答题访问个人页 关注 展开全部 答案是hadtaught.by+一段时间表示用完成时态,完成时态有:现在完成时,过去完成时,过去将来完成时和将来完成时.题目中by后面跟的是“thetimeshewas14”是一个过去时间,所以用过去完成时,teach的过去完成式是:hadtaught“,所以这道题的答案是”hadtaught“.明白了吗? 本回答由提问者推荐 已赞过 已踩过< 你对这个回答的评价是? 评论 收起 余若谷夙棋 2020-04-21 · TA获得超过3.5万个赞 知道大有可为答主 回答量:1.2万 采纳率:33% 帮助的人:939万 我也去答题访问个人页 关注 展开全部 过去完成时 hadtaught Bythetime 过去完成时的标志希望可以帮到你 已赞过 已踩过< 你对这个回答的评价是? 评论 收起 推荐律师服务: 若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询 其他类似问题 2023-05-08 It was the second time he__________to me. I would never trust him again. 2023-12-27 i+still+remember+the+first+time+i+learned+to+wash 2011-11-30 It's time we ____ the lecture because everybody has arrived. a. start b. will start c. started d. s 15 2011-08-22 He was only in _______ at that time.A.his 30’s B.the 30’s C.his thirties D.the thirties 2 2017-09-21 By the time he was twelve, Edison _______ to make a living by himself. A.would begin B.has . 2 2013-09-02 "By the time he was twelve, Edison _______ to make a living by himself." 2 2016-02-22 It's time we ____ the lecture because everybody has arrived. 3 2012-04-17 There was once a time __ I was extremely scared to attend school because of the strict teacher. 4 更多类似问题 > 为你推荐: