(This is a screenshot of opening of chapter 18 of Shin Nihongo No Kiso book. This is done just for the short recap of what I learned.)
1.Ri-san wa Kanji o yomu koto ga dekimasu. Ri can read Kanji.
Syntax: verb in simple form+koto ga dekimasu.
Usage:This is use for expressing ability. The opposite is dekimasen/dekinai. Ri-san wa kainji o yomu koto ga dekimasen means Ri can’t read Kanji.
2.Watashino shumi wa eiga o miru koto desu. My hobby is watching movies.
Syntax: verb in ru-form+koto desu
Usage:This is use to turn a verb into gerunds. For example, watch to watching. eiga o mimasu means “to watch movie”. eiga o miru koto desu to “watching movies”.
3. Neru mae ni, hon o yomimasu. Before I sleep, I read books.
Syntax: verb in ru-form+mae ni, verb in masu form.
Usage: Mae ni is used to expressed an action done before another action. Such like an example above. neru is nemasu in ru-form which means sleeping. Neru mae ni, literally means before sleep.