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Sentence Correction: Subject Verb Agreement - A Complex Subject/Long Distance between Subject and Verb

Dog trainers, sometimes surprised by the uncontrolled behavior of certain pets, suggest that owners are working on discipline and communication from an early age.

This answer choice is grammatically incorrect. Suggest is one of the nine verbs to which the Subjunctive rule applies (if it is followed by that). This means that the next verb after suggest that should be in base form. However, are working is not in base form.

What helps us identify this question as a Subjunctive question as well as identify the mistake is the following Stop Sign:

propose/recommend/require/request/insist/suggest/mandate/ask/demand that

Whenever you come across this Stop Sign, make sure that the following verb is in its base form.

This answer choice is grammatically incorrect and repeats the original Subjunctive error. Suggest is one of the nine verbs to which the Subjunctive rule applies (if it is followed by that). This means that the next verb after suggest that should be in base form. However, will work is not in base form.

What helps us identify this question as a Subjunctive question as well as identify the mistake is the following Stop Sign:

propose/recommend/require/request/insist/suggest/mandate/ask/demand that

Whenever you come across this Stop Sign, make sure that the following verb is in its base form.

This answer choice is grammatically incorrect and repeats the original Subjunctive error. Suggest is one of the nine verbs to which the Subjunctive rule applies (if it is followed by that). This means that the next verb after suggest that should be in base form. However, have not worked is not in base form.

What helps us identify this question as a Subjunctive question as well as identify the mistake is the following Stop Sign:

propose/recommend/require/request/insist/suggest/mandate/ask/demand that

Whenever you come across this Stop Sign, make sure that the following verb is in its base form.

Although this answer choice corrects the original Subjunctive error by placing the verb following suggests that in the base form (work), it is grammatically incorrect: the plural subject Dog trainers does not agree with the singular verb suggests.

What helps us identify this question as a Subject Verb Agreement question and identify the mistake is the following Stop Sign:

A long complex subject / a long distance between the subject and the verb

Very well done!

This answer choice corrects the original Subjunctive error by placing the verb following suggests that in the base form (work).

Dog trainers, sometimes surprised by the uncontrolled behavior of certain pets, suggest that owners are working
Dog trainers, sometimes surprised by the uncontrolled behavior of certain pets, suggest that owners will work
Sometimes surprised by the uncontrolled behavior of certain pets, dog trainers suggest that owners work
Sometimes surprised by the uncontrolled behavior of certain pets, dog trainers suggest that owners have not worked
Dog trainers, sometimes surprised by the uncontrolled behavior of certain pets, suggests that owners work