Knowing these grammar points will make it easier to follow the IELTS Listening test:

▪ question words (e.g. who/what/where/why)
▪ parts of speech (e.g. noun/verb/adjective)
▪ singular/plural (e.g. a question/questions)
▪ first/second/third person (e.g. I see/you see/he sees)
▪ irregular verbs ( e.g. have/ go)
▪ past/present/future tense (e.g. I did/I do/I will do)
▪ articles (e.g. a/an/the)
▪ prepositions (time, e.g. during/until; place, e.g. at/on; direction, e.g. to/from)
▪ phrasal verbs (e.g. turn on/put off)
▪ present simple/ continuous tense (e.g. They study /They are studying)
▪ comparatives/superlatives (e.g. It is better/It is the best)
▪ modal verbs (e.g. must/may/should)
▪ first conditional (e.g. IfI pass I will celebrate).

The following may be helpful in improving your score:

▪ Take part in as many conversations as possible with native speakers.
▪ Listen to news broadcasts – listen to a specific item and try to identify: the names of the people involved, the time, the place, what happened and any other significant details. You can check your accuracy by listening to the same story on several different stations.
▪ Listen to sports programs – listen for the names of places, contestants and teams, the scores and who scored.
▪ Listen to the weather report.
▪ Listen to talk shows.