11) You are going to SOMEWHERE tomorrow.
WHERE ARE YOU GOING TOMORROW?
12) Use "AT" to indicate location or position.
I STUDY ENGLISH AT WIZARD.
13) Do not use "THE” after the possessive pronoun "YOUR".
incorrect order: ...car new (noun + adjective).
correct order: ...NEW CAR (adjective + noun).
IS THIS YOUR NEW CAR?
14) In questions like that, use DOES for HE, she it. Use DO for I, you, we, they.
DOES HE WORK WITH YOU THERE?
15) ...while she "WAS studying"... (PAST continuous tense)...she "WORKED"... (PAST TENSE).
The word "she" took place before the verb worked. "She" is a subject pronoun; as she, the word 'HE" must take place before a verb. "He" is a subject pronoun too. But...
...for "HIM" ("him" is an object pronoun. Object pronouns normally come after verbs or “FOR”).
SHE WORKED FOR HIM WHILE SHE WAS STUDYING IN THE USA.
16) (Active voice) An auxiliary verb + NOT is needed in the past tense:
They + (auxiliary verb with "not") + KNOW. (know is the main verb).
THEY DIDN'T KNOW WHAT TO DO ABOUT THIS PROBLEM.
17) CAN YOU HELP ME WITH MY HOMEWORK TODAY? (if you can help, you will help me).
18) YOU SHOULD DICUSS THIS MATTER WITH HER AS SOON AS POSSIBLE ("SHOULD" was used to indicate duty: it is your duty to dicuss this matter with her as soon as posssible).
19) Use I/we/they/YOU + HAVE (you should have) ... and use he/she/it + HAS.
YOU SHOULD HAVE ASKED HIS PERMISSION FIRST (present perfect tense).
20) BEEN TO = VISITED
HAVE YOU EVER BEEN TO EUROPE ? ( have you ever VISITED Europe ?)