It is not critical for you to have a great command over English during a Group Discussion-PI though it certainly is advantageous. This of Course will not compensate for lack of good content. If your content is good, then even if your English is not outstanding, you must be vocal, rather be inhibited by lack of fluency in the language. You will get credit for soundness of ideas. You can however, improve your language skills by reading extensively. Wherever you come across a new word, write it down in a notebook, use a dictionary to assist you in understand its meaning.

Group Discussion - GD

Use examples in elaborating your point, and helping others understand your ideas better. But please remember to keep it short and simple because in a competitive Group Discussion, nobody has patience to listen to long, drawn out examples.

If the discussion is losing focus, then maybe you can make an interim summary so that the group gets a direction. It helps the group to pick out and focus on the most important points and thus use the remaining time more effectively. However it is not necessary to make an interim summary, if the discussion is already well focused.

Generally, as a rule of thumb, the person who has a sound knowledge of the topic and is a clear thinker speaks more. This leads the students into believing that whoever speaks most is successful. But just speaking for the sake of speaking will not take you far. Stay alert during the course of the Group Discussion as you may be quizzed on it later. You have a limited time to communicate your thoughts on the topics and the moderator can cut short the Group Discussion before the stipulated time, so be prompt in  your thoughts and in communicating them.

Avoid using technical terms as much as possible. In case it is unavoidable, make sure that you do not use abbreviations, and take time out to explain to the group what it means. It is quite likely that other participants of the group have a different academic background from you, and you should make sure you are all on a level playing field.

If you land up in a situation where someone has already said the points you wished to make, then think of other points, or expand on the point made by others, making references to their applicability.

Motivating others can be a positive attribute if it is done properly. However this depends on how it is done. If you openly request someone to speak, you may be putting the other person in a difficult spot, and the evaluators will not look upon that favorably.  If the person whom you have asked to speak was in fact very eager to speak but just needed a little push, then your motivation would be looked on positively. You can use other, indirect means of motivation such as agreeing with halting speakers, adding on o their point, implicitly supporting and giving them direction.