1)There's
always food in the freezer if need be.2)Yet
Mr Schmidt's deep technical background and sharp intellect make him happy to
spar when need be.以上2句都有need be, 这里的need是名词需要的意思吧？那么be怎么理解？
...写的一个完整的虚拟句：He would not have gotten such good grades ifit had not been for the teacher's help. （ifit...help=otherwise改写）我的疑问是为什么改写的句子出现了一个not, 即He would not中的not, 书上说该句型中，改写than的话，要...
...rrect form of the words in the Word Builder:1.
It has always been my dreamto ____ an orchestra.2.
The musician _____ with nervousness before he began to play.3.
Beethoven is recognised as a _____ genius by people around the world.4.
Beethoven is the _____ of Symphony No. 9 in D minor.5.
To his moth...
I spent a year building up
my blog and setting up freelance
writing contracts, so that I would have guaranteed paid work once I quit. 请问老师：build up和set up这里分别是什么意思？查了字典也搞不懂属于哪个意思？
...学习词典》e.g. A broad range of issues was discussed.e.g. If a group or range of things is diverse, it is made up of a wide of variety of things.《Longman Dictionary of Contemporary English》e.g. A fairly narrow range of people are responsible for key decisions.想请教下...
One wants as much information as it is possible to get. This is not the same as getting as much data as possible. The first decision tobe made is how frequently recordings should be made. For example, one could record every minute of the operation and gain an enormous amount of data. 句中有...
Still, there is a lot of work tobe done in the area of transplanting the printed cells. 老师，这里的tobe done, 为什么不可以是to do的形式，我的理解是work后面省略了for us ？请老师帮忙看看问题在哪里？
请问专家老师：It is a bad decision to have come here 是否可用 It is a bad decision to come here代替？此外，是否存在，it is... for sb to have done sth 结构；如存在，是否可以替换成 it is.. for sb to do sth 结构？
以下句子中的to and from属于两个介词用and并列，后面只带了一个宾语：
Local buses run regularly to and from the nearest town. 当地有往返最近城镇的班车。
I rely on the train to take meto and from work each day. 我每天靠火车上下班。
E...
...ate daycare or nannies are uncommon in Germany, and most often only chosen if government-funded or church-funded daycare is not available.请问，句中 most often only chosen 是什么结构？可否加上动词 are，变成Private daycare or nannies are uncommon in Germany, and most often only ar...
...ting that the science about global warming is incomplete, that it's OK to keep puring fumes into the air until we know for sure. This is dangerous game: by the time 100 percent of the evidence is in, it may betoo late. With the risks abvious and growing, a prudent people would take out an insur...