Is the word order in 我也在英國 and 你是很快速 and 你不真的在咖啡廳 correct?

Question

I have a feeling what I'm writing is either wrong order or unnatural sounding. Can someone verify?

我也在英國

(I'm also in england)

你是很快速

(You are very fast)

你不真的在咖啡廳

(You arent really at the cafe.)

In these examples they feel correct to me, but the last one I am particularly unsure of, and also, in the second one, I suspect the 是 is unnecessary and makes it sound unnatural.

Answer 1

First sentence is good. For the second, "快速" is more commonly used as a adverb not an adjective, so you can say "这辆车可以快速地移动" but usually not "这辆车很快速". Also I would omit the "是". So instead of "你是很快速" I would say "你很快". As for the last one "你不是真的在咖啡厅" would sound more natural.

Answer 2

我也在英國 → correct . To make it more natural and lovely you can add （呢/哦/哟/呀） at the end of the sentence, a.e. 我也在英國呢。
你是很快速 → 你真快/你好快. To make it more natural you can add （啊/呀/哦） at the end of the sentence, a.e. 你好快呀。
你不真的在咖啡聽 → 你（才）不（是）在咖啡厅/你（才）没（有）在咖啡厅, if you use the complete forms, you can add （呢） at then end of the sentence, a.e 你才不是在咖啡厅呢。