Help me to tell me the basic grammar of English before high school, junior high school, and elementa

That's right. I think we need to change when to since. I think.

Go buy a grammar book and practice.

It is not enough to just look at grammar, it has to be practiced systematically. Blue skin English is good. There is depth. Let's make it simple with the grammar of Spark English.

I'm in college now.,I'm majoring in English.,For English grammar,You feel that the books are boring.,Then I send you here and you won't read it.,And English grammar is not something that can be explained clearly for a while.,I'll give you my QQ.,If you have any questions in the future, ask me on QQ.,I hope it can help you.,My.,You add time to indicate that you are the one who knows it.,,(Dear,Remember to set my answer to Oh)

1. Fill in which or that, don't use where because vist is directly followed by the place noun, vist the factory, if at this time, the verb is changed to work, you should fill in where or in which, because it is work in the factory. In summary, which or that can only refer to a noun, here is factory, and where refers to pat and pretend to be in the factory

2. Yes. We know that who is the nominative case, which means that to be the subject, it must be placed in front of the verb; And whom is accusative, which means that it can only be an object, and it has to be placed after the verb or preposition. But often use who instead of whom when asking questions, e.g. .

who are you? who are you waiting for?

1.The adverbial is located at the end of the sentence, stating the reason for the occurrence of time, time, place, etc., while need, and want are predicate verbs, which do not do in the sentence, and the to do after do is the object complement.

2.The object is divided into verb-object, i.e., the part after the verb, the preposition, and the part after the preposition.

3.look for indicates the process of searching, and find out indicates the result of finding.

Tense voice, three major clauses (definite clauses, adverbial clauses, noun clauses), non-predicate verbs (infinitives, gerunds, participles), subject-verb agreement, inversion, emphatic sentence structure, subjunctive mood. There are too many of them, and your questions are too general to answer.

1.Grammar: Take a look at this one.

Buy a copy of Thin Ice Grammar and read it for yourself.