معنای مختلفی داره....معنای لغویش که تو هر دیکشنری هست.....ولی اصطلاحی رو میتونی از سایت
http://www.urbandictionary.com/define.php?term=mind
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واسه tend یه اصطلاح داریم به این صورت tend to be یعنی often (اغلب)
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appear when describing an observable condition (زمانی که یه وضعیت قابل رویتی را توصیف میکنی)
seem to describe a perceived condition
You can use seem to talk about more objective facts or impressions and about more subjective and emotional impressions. We do not usually use appear to refer to emotions and subjective impressions. Compare the following:
impressions / emotions
It seems a shame that we can't take Kevin on holiday with us.
It doesn't seem like a good idea to leave him here by himself.
It seems ridiculous that he has to stay here to look after the cat.
more objective facts and impressions
They have the same surname, but they don't appear / seem to be related.
She's not getting any better. It seems / appears that she's not been taking the medication.