Textover adv 越过,横越for the first time 第一次first and foremost 首要的是first, last and all the time 始终如一,贯彻到底fly over 飞跃that lay below 是一个定语从句,修饰mountains,意思是位于飞机下面的山脉。

take photos 拍照were able to take a great many photographs 成功拍了许多照片,表示动作(拍照成功了。

a great many + (pl. 许多,大量ran into trouble 陷入麻烦get into trouble 陷入麻烦ask for trouble/ask for it 自找麻烦shake off the trouble 摆脱麻烦At one point , it seemed certain that their plane would crash.At one point 在某个地方有关 at 的短语eg At first Byrd and his men were able to take photographs.起初伯德和助手们拍下来许多照片。

eg Byrd at once ordered his men to throw out two food sacks.伯德立刻命令助手们把两袋食品扔掉。

eg Bill is not at home at present . He’s at school . 现在比尔不在家,还在上学呢。

eg After walking for several hours, we arrived at the village at last.走了几小时后,我们终于到达了那个小村子。

eg It’s a pity you can’t come to the concert, At any rate , you’ll be able to hear it on the radio.真遗憾,你不能听音乐会。

但不管怎么说,你可以在收音机里听到它。

eg I know he’s often rude to people, but he’s a very pleasant person at heart .我知道他有时对人粗鲁,但从本质上来讲他是个好人。

eg I didn’t know you wouldn’t be coming. At least you could have telephone me我不知道你不能来,至少你该给我打个电话。

eg eg. He behaves very strangely at times . 他有时候举止古怪。

eg eg. I don’t know what I can do about it. I’m completely at a loss .我不知道我能做什么,我真地不知如何是好。

at a loss 不知如何是好;茫然;困惑It seemed certain that 看起来是确定的It seemed to be sure that 看起来是确定的It could only get over the mountains if it rose to 10,000 feet.get over/fly over/clear 飞跃rise to 升至rise-rose-risenByrd at once ordered his men to throw out two heavy food sacks.throw out 抛出,丢弃throw away 抛弃egThrow those old magazines away. 把那些旧杂志扔掉。

throw up 放弃(职业,学业等;呕吐The plane was then able to rise and it cleared the mountains by 400 feet. In 1929, three years after his flight over the North Pole , the American explorer , R.E. Byrd , successfully flew over the South Pole for the first timeThough , at first , Byrd and his men were able to take a great many photographs of the mountains that lay below , they soon ran into serious trouble.In 1929,three years after his flight over the North Pole ,the American explorer , R.E. Byrd , successfully flew over the South Pole for the first time. Though , at first , Byrd and his men were able to take a great many photographs of the mountains that lay below , they soon ran into serious trouble. At one point , it seemed certain that their plane would crash. It could only get over the mountains if it rose to 10,000 feet. Byrd at once ordered his men to throw out two heavy food sacks. The plane was then able to rise and it cleared the mountains by 400 feet. Byrd now knew that he would be able to reach the South Pole which was 300miles away , for there were no more mountains in sight. The aircraft was able to fly over the endless white plains without difficulty.by1pre在…旁边by the fire 在火旁边by the lake 在湖旁边2pre经过,沿着eg He came through the field, not by the road. 他不是沿着马路,而是直接穿过田野来的。

3在…之前eg I have to go back by ten o’clock. 我得 10 点之前回去。

4以….., 用…..by train 坐火车by phone 通过电话by airmail用航空邮寄某物5相差…左eg She is taller than I by three centimeters. 她比我高 3 厘米。

eg We defeated the opposing team by 3 runs. 我们以 3 分的优势击败对手。

Byrd now knew that he would be able to reach the South Pole which was 300 miles away, forthere were no more mountains in sight.would be able to…将能够(过去将来时for因为because 因为区别:because 通常表示说话人认为这种理由或原因是听话人所不知道的。

eg He didn’t attend the meeting because he had too much work to do.在回答"why"提问的时候只能用becausefor 1表因果关系时,可与 because 互换,但只能放在主句后,不可放在句首。

eg He could not have seen me, for I was not there. 他不可能看见我,因为我不在那儿。

2还可表示补充的解释或判断,不可用 because 代替(显而易见的理由eg It rained last night, for the ground is wet. 昨晚下雨了,因为地是湿的。

since表原因,是指人们已知道事实,“既然”eg Since he can’t answer the question, you’d better ask someone else.既然他不能回答这个问题,你最好问别人吧。

as 比 since 语气更弱,译作“既然,由于”在含 since, as 的句子里,全句重点放在主句的内容上,因为其理由或原因在说话人看来已很明显,或为听话所熟悉"which was 300 miles away"是一个定语从句,修饰southpole,意思是位于300英里之外的南极。

in sight 视线之内out of sight 视线之外The aircraft was able to fly over the endless white plains without difficulty. without difficulty 毫无困难地with no difficulty 毫无困难地with some difficulty 有一定困难with much difficulty 有很大困难with great difficulty 有极大的困难with little difficulty 几乎没有困难was able to 过去某时成功做成…Special Difficulties用带有 at 的词组来替换句中括号部分,如有必要可做些改动: 1We found our way home (in the end.We found our way home at last.2He stayed (in the house all day yesterday.He stayed at home all day yesterday.3You must write to him (immediately.You must write to him at once.4He cannot see you (now as he is busy.He cannot see you at the moment/at present as he is busy.5He annoys me (sometimes.He annoys me at times.6When I saw that the house was on fire, I (didn’t know what to do. What I saw that the house was on fire, I was at a loss.7(When it began, I thought it would be a good film but I was wrong. At first I thought it would be a good film but I was wrong. Exercises1Did the mountains lie far below? 山脉在远远的下面吗?Alie v 躺,处于某种状态,位于;Blay v 置,放,使lie 的过去式;Claid v 是lay 的过去式和过去分词;Dlain v 是lie 的过去分词。