1. Drivers sometimes can't see you.

1-2. Drivers can't sometimes see you.
1-3. Sometimes drivers can't see you.
1-4. Drivers can't see you sometimes.
(Are all grammatical?)

2.You can get a shock.
(What is the meaning of 'get' here?)

3. Mrs. Johnson gave her class a group project about safety.

3-1. Mrs. Johnson gave a group project about safety to her class.
(Are both the same?)

4. Let's look at the reports below.
(What is the part of speech of 'below'?)

4-1. Let's look at the reports which are below. (Is this the full form of #4?)

5. You are a biker.
5-1. You are a bike driver.
5-2. You are a bike rider.
5-3. You are a motor bike driver.
5-4. You are a motor bike rider.

(Which ones are correct?)

6. He is riding an elephant.
6-2. He is rding on an elephant.
6-3. He is riding a car.
6-4. He is riding in a car.
6-5. He is riding on a car.
(Which expressions are correct?)

7. Don't hide under a bed or in a closet.

7-2. Don't hide under a bed and in a closet.

(Do I have to use 'and' or 'or'? Are both the same in meaning?)

1. - The second one is not used. The adverb is out of place.

2. - Correct. In here, "get" means "receive."

3. - 3 is better than 3-1.

4. - 4 is better (fewer words!). "Below" is an adverb, telling where. 4-1 is OK, and yes, it's the full form.

5. - 5-1 and 5-3 are not used. Someone is a bike rider, whether he/she is riding or driving! Weird, huh?

6. - 6, 6-2, and 6-4 are correct. (6-5 would be correct if you were riding on the roof of the car, I suppose!)

7. - The conjunctions "and" and "or" do not have the same meanings. 7 means not to hide in either of those places. 7-1 seems impossible to do unless the bed is in a closet! Think of the word "and" like a + sign; the word "or" gives you a choice of one or the other.

=)

1. Yes, all four variations are grammatically correct.

2. In this context, the meaning of 'get' is to receive or experience something. So, "You can get a shock" means that there is a possibility that you might receive or experience a shock.
3. Yes, both sentences have the same meaning.
4. In the sentence, "below" is functioning as an adverb modifying the verb "look." It indicates the location of the reports.
4-1. Yes, "Let's look at the reports which are below" is the full form of sentence #4, where "which are" is added to further specify the reports.
5. All of the options are correct, but they convey slightly different meanings:
- "You are a biker" refers to someone who rides a bicycle or motorcycle.
- "You are a bike driver" implies that you drive a bike as a means of transportation.
- "You are a bike rider" simply states that you ride a bike.
- "You are a motorbike driver" specifies that you drive a motorbike.
- "You are a motorbike rider" conveys that you ride a motorbike.
6. The correct expressions are:
- "He is riding an elephant."
- "He is riding in a car."
Both 6-2 and 6-5 ("He is riding on an elephant" and "He is riding on a car") are not commonly used expressions.
6-3 ("He is riding a car") is not grammatically incorrect, but it implies that the person is physically on top of the car rather than inside it.
4-1
7. "Don't hide under a bed or in a closet" is the correct sentence.
Using 'or' here indicates a choice between the two options - either hide under a bed or hide in a closet.

1. All of the sentence variations you provided are grammatically correct. The position of the word "sometimes" can vary within the sentence without causing any grammatical errors.

2. In the statement "You can get a shock," the word "get" means to experience or receive. In this context, it implies that you might encounter or suffer from a shock.

3. Yes, both sentence variations have the same meaning. In both cases, Mrs. Johnson gave a group project about safety to her class.

4. In the sentence "Let's look at the reports below," the word "below" is functioning as an adverb. It modifies the verb "look" by indicating the location of the reports.

4-1. "Let's look at the reports which are below" is a full form of sentence #4. Here, the relative pronoun "which" introduces a relative clause that provides additional information about the reports.

5. All of the sentence variations are correct and can be used, depending on the specific context and intended meaning. Both "biker" and "bike rider" refer to someone who rides a bike, while "motorbike driver" and "motorbike rider" specifically refer to someone who rides a motorbike.

6. The expressions "He is riding an elephant" and "He is riding in a car" are correct. However, "He is riding on an elephant" and "He is riding on a car" can be considered incorrect because the preposition "on" implies that the person is physically on top of the elephant or car, which is not usually the case.

7. Both "Don't hide under a bed or in a closet" and "Don't hide under a bed and in a closet" are grammatically correct. However, they have slightly different meanings. Using "or" suggests that you should choose one option (either under a bed or in a closet), while using "and" implies that you should take both actions simultaneously (under a bed and in a closet). The choice depends on the specific context or instructions provided.