1. The next few years, you will grow in and out.

2. The next few years, you will grow mentally and physically.

(Does #1 mean #2?)

3. He is going to New York tomorrow.
4. He will go to New York tomorrow.
5. He goes to New York tomorrow.

(Are the three sentences the same?)

# 1 is not correct because the meaning is not clear.

For # 2, it would be better to say, "In the next few years you will grow both mentally and physically.

#s 3, 4, and 5 are all correct and mean the same.

1. In sentence #1, "The next few years, you will grow in and out," it is not clear what "in and out" refers to. Without further context, it is difficult to determine whether it means growing both mentally and physically. Therefore, sentence #1 cannot be considered the same as sentence #2, which explicitly states that growth will occur both mentally and physically.

To understand the meaning of a sentence, it is important to consider the context and the usage of specific words or phrases. Without further information, it is challenging to confirm the exact meaning of sentence #1.

3. Sentence #3 "He is going to New York tomorrow" is in the present continuous tense, indicating that the action of going to New York is already planned and will happen in the future. The use of "is going" suggests an arrangement that has been made prior to the present moment.

4. Sentence #4 "He will go to New York tomorrow" is in the future simple tense, indicating that the action of going to New York is planned or likely to happen in the future. The use of "will go" suggests the person's intention or prediction to go to New York tomorrow.

5. Sentence #5 "He goes to New York tomorrow" is in the present simple tense, indicating a habitual or scheduled action. However, in this specific context, it sounds incorrect. The use of "goes" usually implies a recurring action, but when combined with the word "tomorrow," it creates confusion. It would be more appropriate to use future tense (e.g., "will go") to express the action happening tomorrow.

Therefore, sentences #3 and #4 have a similar meaning, as both indicate the action of going to New York in the future. However, sentence #5 may be considered different due to the incorrect tense usage.