在初中英语学习中，现在完成时是一个非常重要的语法点。它主要用于描述过去发生的动作对现在造成的影响或结果，或者表示从过去某一时间开始并持续到现在的动作或状态。为了帮助大家更好地掌握这一时态，下面是一些精选的练习题。
一、选择正确的选项填空
1. I _______ my homework already.
A) finish B) finished C) have finished D) am finishing
2. She _______ the book last week.
A) has read B) read C) is reading D) reads
3. They _______ in China for five years.
A) live B) lived C) have lived D) will live
4. The train _______ already.
A) has left B) leaves C) is leaving D) left
5. We _______ to the park yesterday.
A) go B) went C) have gone D) had gone
二、改写句子
将以下句子改为现在完成时：
1. I bought a new bike yesterday.
改为：_________
2. She visited her grandparents last summer.
改为：_________
3. They moved to this city in 2010.
改为：_________
三、根据提示造句
1. 提示：已经吃过晚饭
句子：_________
2. 提示：昨天去了公园
句子：_________
3. 提示：自从小学就开始学英语
句子：_________
通过这些练习题，希望大家能够更加熟悉现在完成时的用法。记住，现在完成时通常与以下时间状语连用：already, yet, just, ever, never, before, so far, up to now等。希望同学们能够在实践中不断巩固和提高自己的英语水平！
