Subject Maker (は)

When you want to make any noun subject you have to add (ha pronounced as wa). For example

English: Hana Nakayama is funny person.

Japanese 中山 はな おもしろい ひと です
Romaji Naka Yama Hana wa omoshiroi hito desu
English (surname) (given name) (subject marker) funny person is

Object Maker(を)

If you want to make some noun Object of a verb then you have to use (wo pronounced as o)

For example: English: Hana eats rice.

Japanese はな ごはん たべます
Romaji Hana wa gohan o tabemasu
English (name) (subject marker) rice (object marker) eats

Verb form

Writing any root verb form in english starts with to. In japanese in place of to we use
Now, love noun form in japanese is あい and verb form is あいす hence to demonstrate root verb form we have to say to love that is あいする.  

Present tense:

In present tense we use ます after a root verb form ommiting ofcourse ()to. Henece I love japan becomes in japanese わたし は にほん を あいします.

  • Present continuous: to use ing we use てい. So I am loving Japan or I currenly love japan will be わたし は にほん を あいしています