将以下英文文本进行拼写和语法检查并提出纠正意见。


文本：This sentenses has many misteiks and bad gramer. I need help correct it.
文本：This sentence has many mistakes and bad grammar. I need help correcting it.

纠正意见：将句子中的“sentenses”改为“sentence”，将“misteiks”改为“mistakes”，将“gramer”改为“grammar”，并将“correct”改为“correcting”。