The man we followed suddenly stopped and looked as if _______ whether he was going in the right direction.( A )A.to see B.seeing C.to have seen D.having seen这道题为什么选A而不选B？我选B的理由是这个人当时正在查看是否走对了...
...U4有个句子： At 3:42 a.m., everything began to
shake. It seemed as if the world were coming to an end!我们知道，as if/as though、even if/even
though等引导的表语从句或状语从句表虚拟时，如果从句表示的动作发生在过去，用过去完成时。如果按照此原则...
Thus, an ongoing strategy of deterrence resulted in which it was perceived as necessary to maintain a large deployment of weapons in order to create the threat of retaliation for the enemy.这里resulted in which it 里which作什么从句的引导词，感觉不是宾语从句.
请问not可以否定带ago的时间状语吗？比如：He was here not five minutes ago.I saw him not five minutes ago.He was wide awake not five minutes ago.类似地，英语可以说not ten years ago, not six months ago, not three days ago吗？
... have a degree or not, for 10's of
millions of us who voted remain, we are as baffled as you as to how leaving a
great group of countries who we have been trading with and have been at peace
with for almost 50 years just beggars belief.这里的 be they rich or
poor or have a degree or not 从have...
She intended to dress up as a ghost and as she had made her costume the night before.请问句子中第二个as是表示原因吗? 它在这里能否和since或for互换着用?另外问一下老师,dress up as中的up能省略吗?
...ese street food. The dumplings arrive steaming and
dangerously hot. To eat one, you have to decide whether ___57___ (bite) a small
hole in it first, releasing the stream and risking a spill (溢出),
___58___ to put the whole dumpling in your mouth, letting the hot soup explode
on your tongue.以上...
...何使食物色香味俱全的吗？答案是：Can you tell me how your father makes the food look as good as it tastes and smells ?而我的答案是：Can you tell me how your father makes food look as good as it tastes and smells ?我没有用定冠词the，我认为在此不用the为佳。 但...
Snakes did not acquire their poison for use against man but for use against prey such as rats and mice, and the effects on these of viperine poison is almost immediate. 蛇产生毒液不是用来对付人类的，而是用于捕食老鼠耗子之类的猎物的， 毒蛇的毒液几乎能立...
It began, and for many years continued toexist, as a supplement to the apprenticeship system still in vogue during the seventeenth and eighteenth centuries.
请问老师为什么这个句子中still前没有be动词，as引导的时间状语从句难道可以省略be动词吗？谢谢老师o(^o^)o