Hi Thanh cc all,
Thanks very much for your queries. Learning English is a fun! do you think so?
In order to answer your questions, I would say that in order to write complex or compound sentences, we should learn how to write a simple sentence first, and that we climb up the ladder to build more complicated ones based on what we have acquired during our foreign language acquisition process. Yes, it is a process! However, don't worry if you can't do it right now. even though it takes you time, you will get it. Believe me!
You know, the issue you mentioned is relating to the way how to recognize the word classes in English, which is linguistically different from Vietnamese. If you can recognize it, you can write a good sentence whether it is a simple or a complex sentence. For example, Do you ever know that 'Flammable and inflammable mean the same thing?' The first comes from Latin, the second comes from Latin via old French. However, inflammable can also mean irascible or prone to irritation. This meaning is not used with flammable. If you need to write a warning sign, make sure you use ‘flammable’ as some people are confused by the ‘in’.....okay....that's English!
Regarding your specific question, it is all about the morphological area, though a good sentence needs you to understand both morphology (the study of word forms/ morphemes) and syntax (the study of sentence structure/ level).
Now, let's take this as an example, ' BOOK WILL SHOW HE THE'. You can now ask yourself about the part of speeches of 'book' and 'show'. the word 'book' can be either a noun or a verb. so does the word 'show'. you may write ‘He will book the show’ means that ‘show’ is a noun. ‘He will show the book’ means that ‘book’ is the noun. We know that from the syntax....and that you can write a good sentence, right?
Now, reagrding to morphological area, there is not any common rule to produce adjective from noun or vice versa. However, there are some common tricks for you to learn and remember them in English. For example, the prefixes en- or suffix -tion is the common one to produce verb from noun, e.g. slave (n) -> enslave(v), code(n) -> encode(v); act(v) - > action(n), correct(v) -> correction(n). Furthermore, there are also some more tips such as adjectives beginning with c usually take the prefix un- and in- (comfortable -> uncomfortable, correct -> incorrect), or ones beginning with p will take im- (patient -> impatient), and not all adjectives take prefixes (shy can not become unshy).
If you find this reply problematic, then don’t get too depressed. there is a long way to go.
Regards,
Qui Phuong