9. i havent decided ______. 10. she has learned a lot ______. exercise 4: complete using present perfect + signal words word bank - signal words already · ever · never · for · since · yet · so far · up to now · recently · just · lately · today · this month · up till now 1. i ____________________ (not / finish) the book ____________. 2. she ____________________ (study) english (for) five years. 3. they ____________________ (visit) three countries ____________. 4. he ________________________________ (never,try) sushi. 5. we ____________________ (know) each other ________________ middle school. 6. my teacher ____________________ (explain) the lesson________________. 7. i ____________________ (not / see) that app ____________. 8. she ____________________ (work) here ____________. 9. have you ____________________ (ever / break) your phone? 10. the team ____________________ (make) good progress ____________.

Question

Accepted Answer

### Question 1
# Explanation:
## Step1: Determine the tense and negative form
The sentence is in present perfect tense, and it's negative. The structure for present perfect negative is "haven't/hasn't + past participle". For the subject "I", we use "haven't", and the past participle of "finish" is "finished".
## Step2: Choose the signal word
The signal word "yet" is used in negative sentences or questions to mean "up to now". So we choose "yet".
# Answer:
I haven't finished the book yet.

### Question 2
# Explanation:
## Step1: Determine the tense
The sentence is in present perfect tense. The structure is "has/have + past participle". For the subject "She" (third - person singular), we use "has", and the past participle of "study" is "studied".
## Step2: Use the given signal word
The given signal word is "for", which is used to indicate a period of time.
# Answer:
She has studied English for five years.

### Question 3
# Explanation:
## Step1: Determine the tense
The sentence is in present perfect tense. The structure is "have + past participle" (for the subject "They", a plural subject). The past participle of "visit" is "visited".
## Step2: Choose the signal word
We can choose a signal word like "so far" which is used with present perfect to mean "up to this point in time".
# Answer:
They have visited three countries so far. (Other possible signal words: up to now, up till now, today, this month etc.)

### Question 4
# Explanation:
## Step1: Determine the tense and adverb placement
The sentence is in present perfect tense. The structure is "has/have + past participle". For the subject "He" (third - person singular), we use "has". The adverb "never" is placed before the past participle. The past participle of "try" is "tried".
# Answer:
He has never tried sushi.

### Question 5
# Explanation:
## Step1: Determine the tense
The sentence is in present perfect tense. The structure is "have + past participle" (for the subject "We", a plural subject). The past participle of "know" is "known".
## Step2: Choose the signal word
The signal word "since" is used to indicate a starting point in time. "Middle school" is a starting point, so we use "since".
# Answer:
We have known each other since middle school.

### Question 6
# Explanation:
## Step1: Determine the tense
The sentence is in present perfect tense. The structure is "has/have + past participle". For the subject "My teacher" (third - person singular), we use "has". The past participle of "explain" is "explained".
## Step2: Choose the signal word
We can choose a signal word like "already" which is used with present perfect to mean "before now".
# Answer:
My teacher has explained the lesson already. (Other possible signal words: just, recently, lately etc.)

### Question 7
# Explanation:
## Step1: Determine the tense and negative form
The sentence is in present perfect tense and negative. The structure is "haven't/hasn't + past participle". For the subject "I", we use "haven't", and the past participle of "see" is "seen".
## Step2: Choose the signal word
The signal word "yet" is used in negative sentences to mean "up to now".
# Answer:
I haven't seen that app yet.

### Question 8
# Explanation:
## Step1: Determine the tense
The sentence is in present perfect tense. The structure is "has/have + past participle". For the subject "She" (third - person singular), we use "has". The past participle of "work" is "worked".
## Step2: Choose the signal word
We can choose a signal word like "since" (if we have a starting point) or "for" (if we have a period of time). Let's assume we use "since" with a starting point like "last year" (not given, but the structure is shown). Or we can use "already" etc. Let's use "already" for simplicity.
# Answer:
She has worked here already. (Other possible signal words: for + period, since + time point, recently, lately etc.)

### Question 9
# Explanation:
## Step1: Determine the tense and adverb placement
The sentence is in present perfect tense (in question form). The structure is "Have/Has + subject + past participle". The adverb "ever" is placed before the past participle. The past participle of "break" is "broken".
# Answer:
Have you ever broken your phone?

### Question 10
# Explanation:
## Step1: Determine the tense
The sentence is in present perfect tense. The structure is "have + past participle" (for the subject "The team", we can consider it as a collective noun. If we consider it as a group, we can use "have"; if we consider it as a single entity, we can use "has". Let's use "have" here). The past participle of "make" is "made".
## Step2: Choose the signal word
We can choose a signal word like "so far" which is used with present perfect to mean "up to this point in time".
# Answer:
The team have made good progress so far. (Other possible signal words: up to now, up till now, today, this month etc.)

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QUESTION IMAGE

Question

Explanation:

Question 1

Step1: Determine the tense and negative form

Step2: Choose the signal word

Step1: Determine the tense

Step2: Use the given signal word

Step1: Determine the tense

Step2: Choose the signal word

Answer:

Question 2