当涉及到我的mat-option时，我有两个值选项

tempTime: TempOptions[] = [
    { value: 100, viewValue: '100 points' },
    { value: 200, viewValue: '200 points' }
  ];

tempTimesHighNumber: TempOptions[] = [
    { value: 1000, viewValue: '1000 points' },
    { value: 2000, viewValue: '2000 points' }
  ];

我想在我的html中设置一个基于两个变量的条件：
public SentDate;
public CurrentDate;
我从日期选择器获取这些值。我希望的结果是，如果日期相同，则在mat-options中显示tempTime，否则显示temptimesHighNumber
以下是我尝试过的方法：

<mat-form-field>
      <mat-label>Tally up that score!</mat-label>
      <mat-select
        [(value)]="selectedTempTime"
      >
        <ng-container>
          <mat-option
            *ngIf="checkConditionSentDate === checkConditionCurrentDate"
            [value]="option.value"
            *ngFor="let option of tempTimes"
            >{{ option.viewValue }}</mat-option
          >
          <mat-option
            [value]="option.value"
            *ngFor="let option of tempTimesIfNotTodaysDate"
            >{{ option.viewValue }}</mat-option
          >
        </ng-container>
      </mat-select>
    </mat-form-field>

下面是我遇到的错误：Can't have multiple template bindings on one element. Use only one attribute prefixed with * ("heckConditionSentDate === checkConditionCurrentDate"使用*ngIf的正确方法是什么？或者我的方法不对？