1. 你的第1句属于用现在进行时表示将来：

现在进行时表表将来通常（但不是“一定”）含有意图、安排、打算等含义。这种现在进行时比较生动，给人一种期待感；多用于表示最近或较近的将来，所用动词通常（但不是“必须”）为转移动词。如：

I’m leaving tomorrow.

When are you starting?

I’m not asking Tom to the party.

We are having a few guests tonight.

We are buying a new car soon.

Are you seeing the doctor again next week?

但以下情况通常不用现在进行时表示将来：

(1) 预测或转述我们无法控制的行为或事件时（我们无法安排这些事）：

I think it’s going to rain soon.

Scientists say that the satellite won’t cause any damage when it falls to Earth sometime this afternoon.

(2) 谈论未来永久性的情况时：

People are going to live / will live longer in the future.

Her new house is going to have / will have three floors.

(3) 英语通常会避免使用be going to + go / come，遇此情况通常代之以go和come的现在进行时：

I’m going to town on Saturday.

Are you coming home for lunch?

2. 第2句属于用一般现在时表示按计划要做的事：

用一般现在时表将来，主要见于口语中，通常用于表示按规定、时间表、计划或安排要发生的事情（这样用的一般现在时通常会连用一个表示将来时间的状语）；能这样用的动词主要有arrive, be, begin, close, come, depart, dine, end, finish, go, leave, open, return, sail, start, stop等。如：

My plane is at three o’clock.

Are you on duty next weekend?

Tomorrow is Saturday.

The summer term starts on April 10th.

What time does the bus arrive in Seattle?

The show begins at seven and ends at ten.

另外，在某些从句（尤其是时间或条件从句）中也习惯上要用一般现在时表示将来的情况或动作。如：

I’ll give her the telex when she comes.

Turn off the lights before you leave.

If we hurry, we may catch the bus.

Tell me in case you get into difficulty.