下面补充例句中的“become”,为什么不能用“became”呢?As software programs become obsolete so quickly these days,many companies are starting to hire their own staff of programmers.

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下面补充例句中的“become”,为什么不能用“became”呢?Assoftwareprogramsbecomeobsoletesoquicklythesedays,manycompaniesare

下面补充例句中的“become”,为什么不能用“became”呢?As software programs become obsolete so quickly these days,many companies are starting to hire their own staff of programmers.
下面补充例句中的“become”,为什么不能用“became”呢?
As software programs become obsolete so quickly these days,many companies are starting to hire their own staff of programmers.

下面补充例句中的“become”,为什么不能用“became”呢?As software programs become obsolete so quickly these days,many companies are starting to hire their own staff of programmers.
软件还在发展,不是说就过去发展,现在没发展了.是一个持续性的概念,所以前面不用过去式,用一般现在式.these days表示的意思包括现在

下面补充例句中的“become”,为什么不能用“became”呢?As software programs become obsolete so quickly these days,many companies are starting to hire their own staff of programmers. 仿照例句,发挥想象,把下面句子补充完整 If you work hard,you'll turn successful electronic engineer.turn 和become的区别是什么?例句中的turn successful electronic engineer 为什么不用冠词a 用become+adj(-er)]造句要例句 turn和become区别要有例句书上有句话：This has become the model of a successful life.句中的become为什么不是became 路需要勇气去开拓,需要勤奋去铺就.（仿照例句补充下面的句子）成功需要（）,需要（）. 仿照下面例句写两句话,要求与例句中的格式相似,修辞手法相同.例句：我愿是一朵欢乐的浪花,为大海营造一点生机. 仿照下面例句说一句话,要求与例句中的格式相似,修辞手法相同.例句：我愿是一朵欢乐的浪花,为大海营造一点升级.仿句：仿照例句把下面句子补写完整例句:和煦的春风初一补充习题上的例句:和煦的春风像母亲的手抚摸着你，轻轻地，柔柔地。皎洁的月光像绵绵的春雨像 In the morning everything that you touch will become gold.这句中you touch后面为什么不加动词不定式to?能否举一些例句加以说明？照着写下面是例句 “世说新语”中的《咏雪》最后为什么要补充谢道韫的身份? 题目在补充下面. 仿照例句小溪匆匆走下山崖（把下面的句子补充完整）阳光____________大海高山____________草原春天___ 仿照例句,把下面句子补充完整.他在这块石头上仔细雕刻着,忘记了周围人的存在,他仿佛（）. 仿照例句,在下面横线上把句子补充完整例句：苦难是磨练人格的最高学府法律是维护秩序的红绿灯奉承是_______________________忠告是_______________________ 仿照例句,将下面的句子补充完整.例句；没有理想的人,他的生活如荒凉的戈壁,冷冷清清,没有活力；没有理想的人,他的生活如___________,__________,____________.