Rikku just said many languages were disappearing in the world. So we can see that we may have global language in the future. For example, English is one of the choices. English is commonly used in the business world.
However, some non-English-speakers may find that it is difficult to learn English. So, it comes to a different version of English which is called Globish. Globish is a new word which is combined by global and English. It is a version of the English language that uses only the most common English words and phrases. For example, we use the other children of my mother and father to represent siblings. Therefore, when we use globish, we only use the English with conventional spelling and pronunciation. It is easier for non-English-speakers to use globish.
On the other hand, learning Putonghua is also a new trend of globalisation. With China’s spectacular economic growth, many people are eager to learn Chinese. For example, in Australia, starting from next year, some of the public school will prescribe all students to learn Putonghua. Just as proficiency of English is seen as a key to success, Chinese is also increasingly seen as a pathway to career advancement. So it is not difficult to see that more and more people are learning Putonghua in the world.
To conclude, there are several effects of globalization on languages. Firstly, many languages will disappear and it leads to the loss of cultures and knowledge. On the other hand, new languages are developing. So, there may be global language in the future.