Question

英语语法语态，请帮忙解答~~

Carla Brown has a job in advertising.It's a good job, and she (earns) over ￡30,000 a year.she (studied) marketing in college,and then (found) a job with a small advertising agency in Manchester.Since then she (has changed) her job several times.Now she (works) for Jerome and Jerome,which is a big company with offices all over the world.She (has been) with the compang for three years.The company has clients in America,and she (has been) there several times on business.Last year she (spent) six mouths there.
不太了解括号里面的用法 请解释每一句有括号的语法语态
例如第三句found a job with a small advertising为什么不能加上has？
第四句changed加上has的原因？
She (has been) with the compang for three years. has been的原因？
and she (has been) there several times on business 括号中的原因？
请帮忙解答，辛苦啦~！

Answer 1

(earns)是挣钱的意思，与前面都用一般现在时，是描述目前的状况。
绝对不能加has,此处与She (studied) marketing in college都是描述过去发生的事情，没有强调任何对现在的影响之意，所以只能用过去时，而不用完成时。在此处为…工作；受雇于之意。han changed 是现在完成时，表示过去发生或已经完成的某一动作对现在造成的影响和结果（看since）,（简记:过去对现在).此处has been也是现在完成时，表示过去已经开始并持续到现在的动作或状态，可以和表示从过去某一时刻延续到现在的时间状语连用(简记:过去到现在)。 看来你对时态方面有所欠缺，加油啊！

Answer 2

Carla Brown has a job in advertising.It's a good job, and she (earns,这是现时的年薪-相应於has a job) over ￡30,000 a year.she (studied,已经毕业) marketing in college,and then (found毕业后找工,以往发生的事) a job with a small advertising agency in Manchester.Since then she (has changed-至今已) her job several times.Now she (works-现在-now) for Jerome and Jerome,which is a big company with offices all over the world.She (has been-至今算起来已经有3年) with the company for three years.The company has clients in America,and she (has been-至今已累积之数) there several times on business.Last year she (spent-过去-相应於last year) six mouths there.

Answer 3

(earns) 一般现在时

(studied) 一般过去时

(found) 一般过去时 为什么不用has found ，可以从两方面解释 1、这句话只是在阐述过去发生的事 2、"and" 连接这个句子中的两个工作 ， 前后语态应该一样。

(has changed) 现在完成时 ， 有has的原因是 ：这个句子中有个很明显的表示时间的词组“since then ”---“ 从那时起” ， 有这样一个时间状语 很显然 这个句子得用现在完成时

(works) 一般现在时

(has been) 现在完成时 ， 此句中的时间状语“for three years ” , 这样一个时间状语 你要记住 肯定用完成时态 ， 联系句义 ： 这三年间一直在这个公司工作 ， 过去的动作一直延续到现在 ， 你说是不是符合现在完成时的使用条件呢？!

(spent) yi ban guo qu shi