Time expressions usually go at the end

or at the beginning of a sentence:

Yesterday I went to school.

I went to school yesterday.

This week I'm going to New York.

I'm going to New York this week.

Other popular time expressions:

In the morning  When I wake up in the morning, I like to drink coffee.  What do you drink in the morning?
during the day  During the day, they go to school .  What do you do during the day?
at night  The stars and the moon come out at night. Most people sleep at night, but cats usually stay out late.
in the afternoon  In the afternoon, I come home from school and do my homework.

Using time expressions with the correct verb tense will improve your English:

- Last week I went to the movies. (past tense. )

- This week I'm working early in the morning. (present continous tense to describe the entire week)

- Next week I'm going to take a trip to California. (the "going to" future) 

Infinitives

Infinitives look like verbs, but they actually function as nouns. Consider the following sentences:

• I like pizza. ("pizza" is a noun)
• I like to eat. ("to eat" is an infinitive)
• I like to eat pizza. ("pizza" is the object of the infinitive)

Infinitives can be made with just about any verb: to do, to be, to go, to make, to take, to see, to get--as long as you use the simple form of the verb. Infinitives can't be used with past tense or continuous forms:

to went, to going

Verbs such as need and want often use the infinitive:

• Q: What do you want to do today?
• A: I want to go to the park.
• Q: Is there something you need to get at the store?
• A: Yes, I need to get some mil

I like to listen to the radio. (Infinitives are often used after the verb "like.")
He likes to eat popcorn when he goes to see a movie.
To play in the snow is one of life's greatest pleasures. (The infinitive appears at the beginning of the sentences. This sounds very formal.)
He went downstairs to get some coffee. (The infinitive is often used to explain why someone does something.)
He plays the guitar in order to relax. ("in order" is similar to "because" and it introduces an explanation.)