English grammar issues for the transition from middle school to high school, here comes the English expert!

The first question is, if you want to determine what this "insert" is, you must first determine what kind of clause follows it, whether it is an attributive clause or an object clause. These two are the most easily confused. In fact, it is not difficult to distinguish. If it is an attributive clause, then there must be an antecedent, and the object clause usually follows the verb directly. In this sentence, there is no noun as an antecedent after reach, so this is an object clause, and the object clause cannot be introduced by which. Generally, the introduction words include what, when, where, etc. I believe you already understand why what is used here instead of where?

The second question. There are only two basic structures of a sentence, one is subject, predicate and object, and the other is subject system. The object follows the predicate verb, and the predicate follows the linking verb. There are several types of linking verbs: 1. Be verbs, such as am, is, are.

2. Sensory verbs, such as feel, sound, smell, etc.

3. Continuous verbs , such as keep, stay

4, and some such as look, seem, become, etc.

I have only listed some commonly used ones, and there are many that are too complicated so I will not list them one by one. .

Predicative clauses and object clauses are used in the same way. If you know object clauses, predicative clauses are easy to master.

The meaning of this sentence is: This town is no longer like It was like that ten years ago.

The third question is a question of attributive clauses. The original poster means that you can omit that, right? That is the introductory word of the entire attributive clause. The introductory word can be omitted only when the antecedent serves as an object component in the clause. In this sentence, the attributive clause lacks a subject, so that cannot be omitted