During the period when you study in Chinese language school in China, you may often hear Chinese people say some expressions like完了, which makes you fell confused in meaning. As a matter of fact, it is often used to mean that something can’t be done like完了，天气预报说周末有大雨，爬不了山了. Sometimes, it carries the meaning that there is no hope. For instance, 完了，今年不能上本科了.

Another Chinese phrase that students need to understand is the structure 我敢说, … like in the sentence他是老板的秘书，我敢说，这件事的前因后果他肯定很清楚. When we apply this expression to the daily conversation, we usually mean to confirm a certain fact very absolutely. It has the same meaning with “I’m sure that” in English. For example, 你看他说话时的神色，我敢说，他一定在说谎！

You may intend to express that you have premonition about the results of some certain things when you come to study in China. After leaning the Chinese structure我就知道…, you will know how to say that. It indicates to mean the speaker has already predicated the consequences. The following dialogue will be helpful for understanding. 甲：我们的足球队输了。乙：我就知道得输。对方是全市冠军队啊.

我认了is also important for the foreign students to learn which mean that the speaker himself will take the full responsibility for the terrible consequences like 我既然嫁给他，就绝不后悔。将来吃苦受累，我认了！In some cases, the adverbs such as也and只好can be inserted in the middle. For example, 那我也只好认了，谁让他是我弟弟呢. All of these expressions are often seen when foreign students learn Chinese online free. If they can understand the meaning and application, they will realize better communication with Chinese friends.