And last year Khan Academy and the College Board unveiled a free course they say boosts SAT scores for students at all income levels.这里的黑体部分是插入语吗，如果是为什么没有逗号呢？如果不是那是什么成分?
Though there were great difficulties _______, he never gave up.A. in overcoming B. to overcome答案是选不定式(B)，但为什么不能选 in doing sth (A)呢？英语不是有一个句式是 there is some difficulty (in) doing sth 吗？
Perhaps the most riveting episode of "less-bad" advertising ever seen occurred, amazingly enough, in the industry that most people assume is the master of avoiding saying anything bad about its product.句子里seen occurred，为什么是过去分词？用occurring呢？
...nhances language learning with advanced
technology.请问这个句子开头的介词短语 at the core of
Lancom 是主语吗？这个句子是什么意思？怎么翻译才比较通顺啊？这是2020年的高考英语的北京卷中的句子。上下文如下：At the core of
Lancom is a world-cla...
Since Solano Marketing was established,the human resoureces department has counted on newspapers to advertise job opentings in the company.However,we have observed that ____ to printed advertisements have dropped since the onset of online employment agencies.A. responses B...
...əʊɪŋ/（高中选择性必修单词）【备考词义】adj.1.爱交际的，外向的 2.向外的，离开的 n.[pl]日常支出，开销【学习要点】1.典型例句He’s never been
an outgoing type. 他可不是那种好交际的人。She’s become more
outgoing since she went to college...
They cannot do the impossible any more than we can.这个句型等于no more…than所以可以转化为They can no more do the impossible than we can.吗？如果想表达not… more than的含义，应该怎么转化句型？还是换成别的句型？