When Fred Trump was 11 America entered the first world war and a period of intense anti-German sentiment followed, abating in the interwar years and then flaring up again during the second world war.请问为什么11和America之间没有逗号？整段话的主谓宾是？
...; But in 2017 the improvement in PM 2.5 concentrations stopped and the level flattened out.This winter has seen welcome episodes of clear skies but also more days than in 2016 of the worse,choking smog,when daily PM 2.5 levels rise above 300.The annual average level remains about 25% abo...
（原句）There has been growing anti-AAA sentiment in recent years, and anger at what many feel is increasing AAA interference in BBB affairs.注：文中AAA代表一中央政权，BBB代表一地方政权（改写句）There has been growing anti-AAA sentiment in recent years, and anger at AAA i...
老师好，Laboratory rats and mice live up to 40 percent longer than usual when fed a diet that has at least 30 percent fewer calories than they would normally eat but that otherwise contains all necessary vitamins and nutrients.请问老师，第二个划线处为什么不是t...
She
rang up her daughter and asked for her help in what she described as a little
spot of bother. 这句话里，in
what she described as a little spot of bother 是不是介宾短语作后置定语，修饰前面的宾语 help? 还是作方面状语修饰前面的动词词组 asked
for? 有点糊...
...题答案是C：
I haven’t been to the school since I last left. It is quite different _______ it was 20 years ago.
A. from B. to C. than D. over
为什么不能选A或B呢？这也看不出是什么英国英语或美国英语啊！
...
...iano the whole night.1b)
I practised playing the piano the whole night.2a)
It rained the whole night.2b)
It was raining the whole night.以上使用一般过去时和过去进行时理解上有何差别？张道真语法上说：“有些动词本身并不表示动作完成，如rain,snow,cough,wear...
Prodigious efforts, accelerated during two world wars, were required before the technology of primitive rocketry could be translated into the reality of sophisticated astronauts.该句中动词是那个呢？accelerated during two world wars 又是什么成分呢？