If you feel troubled by this sentence, you are right. The first verb is in the current form, and the second is in the past, but the change between times is generally not allowed. We can improve the sentence by writing: the basic idea behind the sentence chord is quite simple: all parts of your sentence should match (or accept). The verbs must correspond with their subjects in numbers (singular or plural) and in person (first, second or third). To verify the concordance, you just have to find the verb and ask who or what does the action of this verb, for example: love is present, refers to a current state (they still love it now;) Built is past, refers to an action completed before the current period (they do not build it yet).) In general, the authors maintain tension for the main discourse and indicate changes in the calendar by changing the tension in relation to this primary tension, which is usually either a simple past or a mere present. Even apparently non-narrative broadcast ranges should use forms of verbs consistently and clearly. Change the voltage of each game as shown below. You can enter your answers in the text field below: There are three standard times in English: past, present and future. All three ways have simple and more complex forms. For now, we focus only on the simple present (things that happen now), the simple past (things that happened before) and the simple future (things that will happen later). In general, the use of perfect times is determined by their relationship to the tension of the primary narrative. If the main narrative is in the past simple, then the action that is initiated before the period of primary narration is perfectly described in the past. If the main narrative is in a simple present, then the action that is initiated before the period of primary narration is perfectly described in the present.
If the main narrative is in a simple future, then the action that will be launched before the primary narrative period in the future will be perfectly described. Even an essay that does not explicitly tell a story contains implicit delays for the states discussed and described. Changes in tense help readers understand the temporal relationships between different events told. But unnecessary or inconsistent changes in tension can create confusion. General Directive: Install a primary voltage for the main speech, and use occasional shifts at other times to display changes in the calendar.