Verb-て+います is the equivalent form of "be+V-ing" : it is raining right now (today) Verb-て+ あります is about an action that has been done intentionally (ex : ドア が 開あけてあります = the door is opened and it is intentional) You're mistaken with "Subject + が + います" and "Subject + が + あります" which is when we state living/non-living things as "there is / there are" Hope it helped you !

いる： stay for a while / for a certain amount of time. (soon will go away). It is mostly living things ある： be there permanently. It is mostly non-living thing. 雨が降っている　: It is raining. (Soon it will stop) 車がとまっている：A car is stopping. It is very likely a driver is in it and it will move again to go away. ショールームに車がある：It is displayed there in a showroom.

Hi David. あります　= there is or have For example: 駅のそばに本屋があります。 There is a bookstore by the station. わたしは教育に対する熱意があります！ I have a passion for education! I’m wondering when this rainy season will finish....(finish is right?)

Hi 「降る」is a verb. When you conjugate a verb to [be doing] form, you should drop off 「る」part and put 「っている」／「っています」instead. 雨が降っています (it is raining now) If you want to say "It rains today" , it's 「今日は雨です」in Japanese. We don't use 「あります」to say about weather. 〇　今日は雨です ×　今日は雨があります 〇明日は晴れです ×明日は晴れがあります 〇昨日はくもりでした ×昨日はくもりがありました