第一，迷你对话

A: How're you going to prepare for the test?

你想怎样复习来准备这场考试？

B: Well, I'm not going to learn the grammatical rules by heart.

嗯，我不会去背语法规则的。

A: But those are exactly the things I was going to do.

可这正是我要做的。

B: No, you don't have to do that. The teacher is going to examine the language skills, not language knowledge.

不，用不着。老师要考的是语言技巧，不是语言知识。

A: Are you sure?

你敢肯定？

B: I say this for certain.

绝对肯定。

第二，词海拾贝

for certain

exp. Definitely or for sure. （肯定，确定）

e.g. ——How many people are coming to dinner tonight? —— I can't say for certain—my family tends to just show up without responding to invitations.

——今晚有多少人来吃饭?——我不能肯定地说，因为我的家人一般都是不速之客。

e.g.No one can say for certain how the world’s climate is likely to change.

没有人能肯定地说世界气候会如何变化。

第三，语汇积累

1.prepare for：为......做准备

e.g. She decided to forgo the party and prepare for the English exam.

她决定不去参加聚会,为英语考试作好准备。

e.g. She rolled up her sleeves and began to prepare for supper.

她卷起袖子开始准备晚餐。

2.by heart：凭记忆

e.g. He went to see his favorite band in concert and knew all the songs by heart.

他去看他最喜难的乐团的演唱会，而且记得他们所有的歌曲。

e.g. Why don't you write out a speech and get it by heart?

你为什么不写份讲稿，然后把它背下来？

3.learn something by heart：记住，背诵，默诵

e.g. We had better learn by heart as many sentence patterns as we can.

我们最好尽可能多背句型。

e.g. The children all had to learn the poem by heart.

孩子们都得把这首诗背出来。

e.g. Learn this by heart.

记住这一点。

e.g. It' s no use learning the text by heart without understanding it.

背诵课文而不理解它是没有用的。