What do you find hardest about English grammar?

[ESL Partyland]

As a native English speaker it can be sometimes difficult to appreciate how difficult the language can be to learn. I often hear people say that there are a lot of inconsistencies.

So, Question: What are the things that you find the HARDEST about English Grammar?

[congchuaxinhdep24]

I think English Grammar is not as difficult as Vietnamese Grammar. The hardest about English Grammar is the exercises about Sentence Transfromation and Vocabulary Cloze Text in which you must find the words to fill in those gaps in the text. That's really hard and I hope u can show me more exercises about these problems in order for me to practice.