作者：Kerlyn Conlago 3 年以前
685
Present perfect / Past simple
The text provides a comprehensive guide on the usage of the present perfect and past simple tenses, particularly focusing on their negative and interrogative forms. It outlines the structure of sentences, demonstrating how to form negative statements by incorporating '
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Present perfect / Past simple To give new information (general summary). The Us space shuttle Atlants has returned safely to earth. Use with today, this morning, this week etc. When these periods are not finished at the time of speaking. I have shaved today. Use for a state which has gone on up to the present. She has been in the hospital for three days. To talk about something happened in the past, but we don't specify when it has happened. I have bought a new car. Shows a relation between past time and present time. My sister has written many books. Have/has + subject + past participle ? Has she eaten a lot? Have you eaten a lot? Subject + have/has + not + past participle María hasn't eaten a lot. I haven't eaten a lot. Subject + have/has + past participle María has eaten a lot. I have eaten a lot. Yet So far She has phoned me four time so far. Since She has worked since 2000. Ever/never He has never played golf before. Subtopic
Use To give the details. It landed in Florida this morning. Use with today, this morning, this week, etc. when these periods are finished at the time of speaking. He didn't shave today. Use for a state in the past in a period which is finished. I was in the hospital for three days. To indicate that something happened at a specific time in the past. I bought a new car last week. Talks about actions and events in the past that are now finished. Shakespeare wrote many plays. Interrogative Did + subject + infinitive ? Did she eat a lot? Did you eat a lot? Negative Subject +did+not+ infinitive She didn't eat a lot. I didn't eat a lot. Estructure Subject + past simple She ate a lot. I ate a lot. Clue words Yesterday She didn't play golf yesterday. Ago She phoned me two hours ago. Last My sister played soccer last friday.
