It has yet to reach its full size and strength. and its owner his or her full intelligence.老师这句话中的has to是不得不的意思吗？its owner his or her full intelligence怎么分析成分语序是什么？
老师您好，我遇到了一个句子：These ships would have had to return empty, unless their captains were
able to pick up a return cargo. 这里主句是一个虚拟语气，为什么unless引导的从句不用虚拟语气呢？
..., though, might allow a more targeted approach that aims at some
factor in the host which the virus absolutely requires and the host can do
without.《经济学家》里面的句子。我的分析：the
host can do without是和第一个the host并列，do代替require：（in）the
host which the v...
...out what her family memebers are doing. Help
her complete her article with the correct tense of the verbs in brackets.这是初中英语课本上的题目要求，然后这句话的下面，就是一篇小短文，有例如10个括号（）需要填空。我的问题是：为什么不加定冠词the...
These are the generations of the heavens and the earth when they were created, in the day that the LORD God made the earth and the heavens.
老师好，请问when they were created, in the day that the LORD God made the earth and the heavens.算什么从句？算定语从句，上面又没有时间...