
In today's article we are going to propose that you find out if there are verbal periphrases in the following sentences or not and give a justification in each case. The solutions can be found below.
If you don't remember what verbs were, you can access the following link where my colleague gave you the explanation:

Examples of phrasal verbs
EXERCISES
1. I have to finish the food before it's two in the afternoon.
2. My little cousin has finished his accounts for a while.
3. That man is holding the neighbor's dog in the leg.
4. My neighbor, who is a writer, has already written five mystery novels.
5. The Marquise has left word not to set out until her brother arrives
6. Due to the position of the sun, it must be approximately twelve o'clock in the morning.
7. The events happen logically.
8. Please stop spinning the ashtray, it's bad luck.
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SOLUTIONS
1. I have to finish: is a verbal periphrasis because, fulfilling the characteristics that verb 1 is conjugated (present simple), verb 2 is in a non-personal form (infinitive) and they are joined by a conjunction (that), the verb 1 (to have) loses its original meaning of “possess” and acquires that of obligation.
2. It has finishes: is periphrasisverbal because fulfilling the characteristics that verb 1 is conjugated (present simple) and verb 2 is in a non-personal form (participle), verb 1 (to have) loses its original meaning of "possess" and acquires that of a finished action.
3. It has grabbed: is not a verbal periphrasis because, despite the fact that it meets the characteristics that verb 1 is conjugated (present simple) and verb 2 is in a non-personal form (participle), verb 1 maintains its original meaning of «possess» and, in addition, the commutation of verb 2 could be made by the pronoun «lo», «has it».
4. It has written: is a verbal periphrasis because, fulfilling the characteristics that verb 1 is conjugated (present simple) and verb 2 is in a non-personal form (participle), verb 1 loses its original meaning of «to move something from one place to another by carrying it with you» and acquires the one of a completed action.
5. He has left saying: yes it is verbal periphrasis because fulfilling the characteristics that verb 1 is conjugated (preterite perfect compound) and verb 2 is in non-personal form (participle), verb 1 loses its original meaning of "allow" and acquires the action completed.
6. They have to be: if it is verbal periphrasis because fulfilling the characteristics that verb 1 is conjugated (present), verb 2 is in a non-personal form (infinitive), and both are joined by a conjunction (que), verb 1 loses its original meaning of "possess" and acquires that of supposition.
7. They are happening: yes it is verbal periphrasis because fulfilling the characteristics that verb 1 is conjugated (present), and verb 2 is in a non-personal form (gerund), verb 1 loses its original meaning of «to move » and get the action in progress.
8. Stop giving: yes it is verbal periphrasis because fulfilling the characteristics that verb 1 is conjugated (present), verb 2 is in non-personal form (infinitive) and both are joined by a preposition (de), verb 1 loses its original meaning of “allow” and takes on the meaning of completed action.