I sometimes study grammar.有语法错误吗?

I sometimes study grammar.有语法错误吗? sometimes I do.Sometimes I I study sometimes whish i were sometimes i want to sometimes.i.just.need. sometimes i feel very sometimes I am deceived. i play football sometimes 画线提问sometimes I self study or I self-study? I study very late every night to improve my Putonghua sometimes——2amA.until.B.at.C.for.D.from. l study late every night,sometimes untill 2 am 是什么意思? Sometimes they heip me to study Eglish什么意思 I study in I study at St I study manth well I'm very upset ,Sometimes ...... Sometimes I go by bike.