If it were not
for...对应的主句通常是 would do。如：If it were not
for your donations, many more children would go hungry. 要不是有你的捐赠，会有更多的孩子挨饿。请问主句可以用 would have done 吗（如果语境需要的话）？
... to climb up into it.请问加粗部分是不定式复合结构吗？充当定语？it有没有问题，是多余的吗？2. I am going to host a launch for my new book to attract attention to
it, and hopefully I’ll also sell a few copies. 请问加粗部分是不定式复合结构吗？充当状...
...the year ______the Chinese Communist Party was founded?A. which B. that C. when D. on which （同问）That is the day ______I'll never forget.A. which B. on which C. in which D. when （同问）
...But they were to learn, now, that a sin takes on new and real terrors when there seems a chance that it is going to be found out. This gives it a fresh and most substantial and important aspect.1) were learning to：这里的learn是学习，学会的意思，用进行时是表示：正...
By the time you arrived, I_______, so you don't disturb me.
A: will have slept
B: will have been sleeping
C: will be sleeping
D: will sleep
答案是C，why？ A，B为何不可？
...用法词典》在 career 词条说，career 表示“事业”或“一生的经历”，不是抽象名词，如 their careers 里必须用复数形式。但我看到下面这句用的是单数，是对的吗？Their gender need
not affect their career. 他们的性别不一定会影响他们的...