The sentences are grammatical and natural in isolation m, but their meaning is unclear - especially the ‘catch up’ idea. Sensible things to say which might convey your meaning: I’m running behind my monthly reading goal. It’s important that I catch up. I failed to reach my reading goal this month. I will try harder next month. I set a goal to catch up on my reading (for some purpose already known) but I failed to meet the goal and still need to catch up.

Your sentence is almost perfect, but it can be slightly polished for better flow and naturalness: "I set a goal to read for 10 hours a month, but unfortunately, it seems I won’t achieve it. So, I need to catch up on my reading." Changes made: 1. "Read for 10 hours a month" - Adding "for" makes it more natural. 2. Comma after 'unfortunately' - Adds clarity. 3. "Catch up on my reading" - "On" is the correct preposition here. It sounds great now! 😊

Your sentence is mostly correct and sounds natural, but it can be improved slightly for better flow. Here’s a refined version: "I set a goal to read for 10 hours a month, but unfortunately, it seems I won’t achieve it. So, I need to catch up on my reading." Changes and explanations: "read 10 hours" → "read for 10 hours": Adding "for" clarifies the duration of the activity. "achieve this" → "achieve it": Using "it" makes the sentence more concise because "this" is implied. "catch up with my reading" → "catch up on my reading": "Catch up on" is the more common phrase when referring to missed activities or tasks. This version maintains your meaning and sounds more polished! 😊

Yes, it's natural and clear. 'To catch up with my reading,' follows directly from the previous sentence (where you described not meeting your reading goals)--so, it is readily understandable that the second sentence means that you want to remedy this by reading more or 'catching up on your reading.' Some people will be critical when people begin sentences with 'so,' but it's perfectly normal is regular/casual speech.