There are many activities for which prophylactic knee braces are used as a comprehensive safety measure.请问老师：for which prophylactic knee braces are used as a comprehensive safety measure 是定语从句修饰 activities 吗？
For minutes at a time this kind of thing would be running through my
head 请问这里为什么用for来搭配进行时？我的理解是would be running through my head是一种习惯性的动作。然后for minutes at a
time具体的指每一次这个动词持续了几分钟。在我的理解里...
...ned as candid and
as sympathetic as they had been more than twenty years before. I wondered if
she was making a fool of me."Of
course you've given up your business," I said."Oh,
yes," she answered airily. "I ran it more by way of a hobby than for
any other reason, and my children persuaded me to sel...
...ies or skills 敬佩，钦佩；羡慕”解时，构成“admire
somebody for doing something”。例如：
I don't agree with her,
but I admire her for sticking to her principles.（摘自Oxford
Advanced Learner's Dictionary在线词典）
4.admit (P33) 作“to agree unwillingly that something...
...tor sets, a number of story books, and a lot of junk from the five-and-ten forthe boys, and for Laura, a picture Emily had found cheap in a second-hand art shop and a small brooch that had belonged to Henry's mother.1. erector sets译文上说是安装器的意思？erector是建设者、安装...
1. The treehouse had a ladder forthe kids 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...