今天北京新航道托福小编带着大家开始托福重点词汇第七组的学习，学习之前，希望大家慢慢的在脑中回忆一下昨天、前天几天前学的词汇还记不记的。词汇就需要温故而知新才可以，好了，回忆完了就马上开始今天的学习吧。Go ！
1、since / sɪns; sɪns/ prep
(used with the present or past perfect tense 与现在完成时态或过去完成时态连用) from (a specified time in the past) till a later past time, or till now 从(过去某时间)以来﹑ 以後或到现在: I haven't eaten since breakfast. 我吃了早饭後到现在还什麽都没吃呢.
例：She's been working in a bank since leaving school. 她中学毕业後就一直在一家银行工作.
例：He had spoken to her only once since the party. 自从那次聚会以来, 他只跟她说过一次话.
2)since conj
(used with the present perfect, past perfect or simple present tense in the main clause 与主句中的现在完成时态﹑ 过去完成时态或一般现在时态连用) from (a specified event in the past) till a later past event, or till now 从(过去某事)以来﹑以後或到现在;
例：Where have you been since I last saw you? 自从我上次见到你以後, 你到哪儿去了?
例：It was the first time I'd won since I'd learnt to play chess. 自从我学会下国际象棋以来, 这是我次赢.
例：How long is it since we visited your mother? 自从我们看望你母亲以来到现在有多长时间了?
because; as 因为; 既然; 由於: Since we've no money we can't buy a new car. 因为我们没钱, 没法买新汽车.
(idm 习语) ever since =>ever. since adv (used with the present or past perfect tense 与现在完成时态或过去完成时态连用) from a specified time in the past till a later past time, or till now 从过去某时间以来﹑ 以後或到现在;
例：He left home two weeks ago and we haven't heard from him since. 他两星期以前离开了家, 到现在我们一直没有他的消息.
例：She moved to London last May and has since got a job on a newspaper. 她去年五月到伦敦, 此後一直在报社工作.
2、gradual / ˈgrædʒuəl; ˋɡrædʒʊəl/ adj
(a) taking place by a series of small changes over a long period; not sudden 逐渐的; 渐变的: gradual decline, progress, etc 逐渐的衰落﹑ 进步等，来源：北京新航道托福培训
例： a gradual increase, decrease, recovery 逐渐的增加﹑ 减少﹑ 恢复.
(b) (of a slope) not steep (指斜坡)不陡峭的, 和缓的: a gradual rise, fall, incline, etc 渐起﹑ 渐落﹑ 渐降.
2)gradually / -dʒulɪ; -dʒʊlɪ/ adv
in a gradual way; by degrees 逐渐地; 逐步地:
例：Things gradually improved. 情况已逐渐改善.
3)gradualness n [U].
3、Paraller / ˈpærəlel; ˋpærəˏlɛl/ adj
(a) (of two or more lines) having the same distance between each other at every point (指至少两条线)平行的: parallel lines 平行线. =>illus at converge 见converge插图. (b) [pred 作表语] ~ to/with sth (of a line) having this relationship with another one (指一条线)与另一条线平行: The road runs parallel with the railway. 该公路与铁路平行.* The road and the railway are parallel to each other. 该公路与铁路相互平行.
exactly corresponding; similar 相对应的; 相同的; 类似的: a parallel case, career, development 相同的事例﹑ 职业﹑ 发展.
> parallel n
1 [C] (also ,parallel `line) line that is parallel to another 平行线.
2 (also ,parallel of `latitude) [C] imaginary line on the earth’s surface, or a corresponding line on a map, parallel to and passing through all points the same distance north or south of the equator (地球或地图的)纬线, 纬度圈: the 49th parallel 第49纬度线.
3 [C, U] person, situation, event, etc that is exactly similar to another 极相似的人﹑ 情况﹑ 事情等: a career without parallel in modern times 当代无匹的业迹.
4 [C] (a) comparison (used esp in the expression shown) 对比, 比较(尤用於以下示例):draw a parallel between A and B 把A和B相比较.(b) similarity 相似处: I see parallels between the two cases. 我看这两种情况有相似处.
5 (idm 习语) in parallel (of an electric current) having the negative terminals attached to one conductor and the positive ones to another (指电流)并联. Cf 参看 series 2.
parallel v [Tn esp passive 尤用於被动语态] 1 be equal to (sth); match (sth) 与(某事物)相当, 相匹敌:His performance has never been paralleled. 他的表演举世无匹.
be comparable or similar to (sth) 可与(某事物)相比; 与(某事物)相似: Her experiences parallel mine in many instances. 她的经历多与我的相似.
parallelism / -ɪzəm; -ˏɪzəm/ n [U] state of being parallel; similarity 平行; 相同; 相似; 类似; 对应: Don’t exaggerate the parallelism between the two cases. 不要夸大那两件事的相似性.
# ,parallel `bars pair of bars on posts, used for gymnastic exercises 双杠.
上面就是今天要大家掌握和学习第七组托福重点词汇，希望考生不在于记得多，但是要记得准记得精，预祝各位考生都能够夺得桂冠，实现自己的梦想。
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