1. Does it mean that I have to use Present Perfect Continues becouse I'm refering to the period of time "for three month"? ****Not necessarily. The reason why you use the present perfect continuous ("has been traveling") is because you are referring to something that began in the past and continues into the present. Whether or not you say "3 months", if you want to say she began something in the past and continues to do it now, use the present perfect continuous. 2. And if I say: "She is traveling Europe" meaning that she is somewhere in Europe at the time of speaking, it would be correct? ****Yes. "She is traveling Europe" would be more correctly used to say she is currently in Europe. I suppose that some English speakers do say "she is traveling Europe" incorrectly in lieu of "she will be traveling Europe" (which would be correct if you were discussing her future plans to travel). 3. Could you bring some more examples of when I need to use "She will be traveling...." form? ****"She will be traveling for three months" communicates that she plans to travel for that period of time. I suppose you could say "she will travel for three months," but "she will be traveling" sounds more natural when you are discussing travel within the country. ("she will travel TO" vs. "she will be traveling in") Hope this helps! :) Source: American English (self)

A few months ago, I asked a visiting Russian, "How long are you here?" and he replied, "for two weeks'. Later in the conversation it became clear that he meant that he had arrived in the city two weeks ago, while I thought he meant he would be leaving in two weeks. Using the present tense in expressions like this in not technically wrong grammatically, but it is vague enough to cause confusion. She will be travelling for three months. - This entire three month period is in the future. She has been travelling for three months. - This entire three month period is in the past. She is travelling for three months. - The relationship of this period to the present is uncertain. Here is a more precise way of discussing one's travel period that you may find useful: She will be travelling until August. She has been travelling since May. She is travelling from May til August.

1. If she is currently traveling, yes.. you should say "She has been traveling...." 2. If she is planning to travel (but has not yet), you should say "She is traveling...", "She is going to travel...., "She will travel....." OR "She will be traveling...." (This use of the progressive, to discuss something that will happen soon, is unusual and an exception to the rule) Source: American English (self)

You will use Past Perfect Continuous in a situation when someone/thing has done something in the past up until and continuing at this time. "I HAVE BEEN studying grammar for three months." Meaning the past three months, but you are still continuing to study grammar currently. Here is a website I found that has explainations and exercises as well: http://www.englishpage.com/verbpage/presentperfectcontinuous.html "She will be traveling." is in the Future Continuous tense. (Also on the website above.) I expresses something that will take place in the future and of course, continues. It also represents that the action has already started. So if you say "She will be traveling in three months." It would be interpreted as: She started traveling before 3 months in the future, but will continue to travel after 3 months into the future. If in three months she will begin traveling then "She is going to travel (tour Europe) in three months." would be a more correct way to state this. (Simple Future)

Q1: yes Q2: This time next day they will be sitting in the cinema. Don't phone me between 8:00 and 10:00. We'll be having classes then. Will you be using your bicycle this evening? Please come tomorrow afternoon, Tomorrow morning I'll be having a meeting. 　　 Stop the child or he will be falling over. 　　 You will be making a mistake. 　 My duties will end in July and I will be returning to Shanghai.