英语句子：We have learned four units since the beyining of this t

英语句子：We have learned four units since the beyining of this t 关于英语将来完成时搞不清楚~比如这一句We shall have learned 12 units by the end We have already learned 10 units.这句话对吗? We have learned English since 1999. We will have learned more than 3,000 words_____ the end of t 句子改错 The students have learned five lessons for the end of t 1.Because/Since we read the book,we have learned a lot. We can't have ___at this time of the year. 纠正下列句子的错误!1.It rained a lot this summer,since we didn’t have 英语很烂求帮忙This is the amortized cost of feedback in units of fo 英语.Some of the students have already learned enough English four years have passed since the students came to this schoo