Hello Yuicho. English is not known for articulating sounds in the throat — we generally use our lips and tongues. The only two guttural sounds in English are the H and the glottal stop /ʔ/. By way of comparison, the Japanese H tends to be pronounced with the back of the tongue in the back of the mouth, except before /u/, where it is pronounced with the lips. The glottal stop is not an actual phoneme in English, but you may hear it in slow speech at the beginning of a word that is spelled with an initial vowel. “To arrive” /tʊuʔəɹaiv/. On the other hand, you’re more likely to hear a linking consonant (from the previous word) or semi consonant in rapid speech /tʊwəɹaiv/. The glottal stop is often used instead of a T at the end of a syllable. This is true for most speakers before /n/: written /ɹɪʔən/. Cockney accent takes this to an extreme…. Here’s a very useful website for you to see video and animations about place of articulation: http://soundsofspeech.uiowa.edu/english/english.html If you have further questions, feel free to message me.

No, nothing like you see in French or Arabic coming from down in the throat. Some few words in English use the tongue but not really.

You can learn a lot about how sounds are made and how they can change by studying phonetics in particular. It's one of the more interesting subsets of linguistics that I think you might find enjoyable.

In my experience, most everything is determined by the placement of the tongue and shape of the lips.

Thank you everyone. I appreciate answers you gave me. I feel like I got tips to clarify the issue.