Present Perfecto Simple

  1. One possible explanation of the high degree of order in the present-day world is that it is just a question of luck. 对 今天 世界 之所以 高度 有序 的 一个 可能 解释 是, 这 恰恰 是 一种 侥幸。
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  1. The journalists must be present at all important events and yet still let them have opportunity to write and file their stories. 记者 必须 出席 所有 的 重要 场合, 但 同时 又 得 让 他们 有 机会 写 消息, 发 消息。
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  1. of swarm since if it is not present, then it is maybe impossible for the swarm to achieve any other group objective. 稳定性 是 群集 行为 的 基本 特性, 如果 群集 不 稳定, 那么 群集 不可能 达到 或 完成 各种 集体 目标 或者 任务。
  1. "Will not the mass of Paris and its inhabitants present an obstacle dividing and delaying the enemy? " he asked the French. 他 问 法国人: “ 巴黎 群众 和 居民 难道 不会 迎战, 分割 、 牵制 敌军 吗? ”
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By doing this, deep search can present a curated list of results and answers that are more likely to answer your question, satisfy your curiosity, or solve your problem. Speed Going deeper takes time, and deep search can take up to thirty seconds to complete.

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To play this video you need to enable JavaScript. Do you have a question you want us to answer? You can send us your questions to learningenglish@bbc.co.uk 1. We can use both present perfect and past ...

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